diff --git a/test/Microsoft.AspNet.Facebook.Test/Microsoft.AspNet.Facebook.Test.csproj b/test/Microsoft.AspNet.Facebook.Test/Microsoft.AspNet.Facebook.Test.csproj
index 60fe15d4f..ca6701211 100644
--- a/test/Microsoft.AspNet.Facebook.Test/Microsoft.AspNet.Facebook.Test.csproj
+++ b/test/Microsoft.AspNet.Facebook.Test/Microsoft.AspNet.Facebook.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -35,19 +36,19 @@
     <Reference Include="System.Web" />
     <Reference Include="System.Xml" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -133,7 +134,10 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
diff --git a/test/Microsoft.AspNet.Facebook.Test/packages.config b/test/Microsoft.AspNet.Facebook.Test/packages.config
index aba0259ee..113e249ed 100644
--- a/test/Microsoft.AspNet.Facebook.Test/packages.config
+++ b/test/Microsoft.AspNet.Facebook.Test/packages.config
@@ -4,11 +4,10 @@
   <package id="Facebook" version="6.4.2" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/Microsoft.TestCommon/Microsoft.TestCommon.csproj b/test/Microsoft.TestCommon/Microsoft.TestCommon.csproj
index c401778e2..3f182ed2d 100644
--- a/test/Microsoft.TestCommon/Microsoft.TestCommon.csproj
+++ b/test/Microsoft.TestCommon/Microsoft.TestCommon.csproj
@@ -21,19 +21,19 @@
     <Reference Include="System.Xml" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
diff --git a/test/Microsoft.TestCommon/packages.config b/test/Microsoft.TestCommon/packages.config
index 44a585a56..7ab97c808 100644
--- a/test/Microsoft.TestCommon/packages.config
+++ b/test/Microsoft.TestCommon/packages.config
@@ -1,9 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/Microsoft.Web.Helpers.Test/Microsoft.Web.Helpers.Test.csproj b/test/Microsoft.Web.Helpers.Test/Microsoft.Web.Helpers.Test.csproj
index f5bc649ce..6c138411d 100644
--- a/test/Microsoft.Web.Helpers.Test/Microsoft.Web.Helpers.Test.csproj
+++ b/test/Microsoft.Web.Helpers.Test/Microsoft.Web.Helpers.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -25,19 +26,19 @@
     <Reference Include="System.Configuration" />
     <Reference Include="System.Web" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -97,5 +98,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/Microsoft.Web.Helpers.Test/packages.config b/test/Microsoft.Web.Helpers.Test/packages.config
index 96c2d307e..2debdd5e9 100644
--- a/test/Microsoft.Web.Helpers.Test/packages.config
+++ b/test/Microsoft.Web.Helpers.Test/packages.config
@@ -2,11 +2,10 @@
 <packages>
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/Microsoft.Web.Mvc.Test/Microsoft.Web.Mvc.Test.csproj b/test/Microsoft.Web.Mvc.Test/Microsoft.Web.Mvc.Test.csproj
index e7e211b63..9b2d8a21b 100644
--- a/test/Microsoft.Web.Mvc.Test/Microsoft.Web.Mvc.Test.csproj
+++ b/test/Microsoft.Web.Mvc.Test/Microsoft.Web.Mvc.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -36,19 +37,19 @@
     <Reference Include="System.Web.Abstractions" />
     <Reference Include="System.Web.Routing" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -164,5 +165,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/Microsoft.Web.Mvc.Test/packages.config b/test/Microsoft.Web.Mvc.Test/packages.config
index fb2a3a2fc..07af0ca82 100644
--- a/test/Microsoft.Web.Mvc.Test/packages.config
+++ b/test/Microsoft.Web.Mvc.Test/packages.config
@@ -3,11 +3,10 @@
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/Microsoft.Web.WebPages.OAuth.Test/Microsoft.Web.WebPages.OAuth.Test.csproj b/test/Microsoft.Web.WebPages.OAuth.Test/Microsoft.Web.WebPages.OAuth.Test.csproj
index 91f9d4ef4..e126029d3 100644
--- a/test/Microsoft.Web.WebPages.OAuth.Test/Microsoft.Web.WebPages.OAuth.Test.csproj
+++ b/test/Microsoft.Web.WebPages.OAuth.Test/Microsoft.Web.WebPages.OAuth.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -50,19 +51,19 @@
     <Reference Include="System.Core" />
     <Reference Include="System.Web" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -94,7 +95,10 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
diff --git a/test/Microsoft.Web.WebPages.OAuth.Test/packages.config b/test/Microsoft.Web.WebPages.OAuth.Test/packages.config
index 9b35262d5..a531d3eba 100644
--- a/test/Microsoft.Web.WebPages.OAuth.Test/packages.config
+++ b/test/Microsoft.Web.WebPages.OAuth.Test/packages.config
@@ -8,11 +8,10 @@
   <package id="DotNetOpenAuth.OpenId.Core" version="4.0.3.12153" targetFramework="net452" />
   <package id="DotNetOpenAuth.OpenId.RelyingParty" version="4.0.3.12153" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Net.Http.Formatting.NetCore.Test/System.Net.Http.Formatting.NetCore.Test.csproj b/test/System.Net.Http.Formatting.NetCore.Test/System.Net.Http.Formatting.NetCore.Test.csproj
index 3a208bbfd..ec52b9b47 100644
--- a/test/System.Net.Http.Formatting.NetCore.Test/System.Net.Http.Formatting.NetCore.Test.csproj
+++ b/test/System.Net.Http.Formatting.NetCore.Test/System.Net.Http.Formatting.NetCore.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -39,19 +40,19 @@
     <Reference Include="System.XML" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -319,5 +320,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/System.Net.Http.Formatting.NetCore.Test/packages.config b/test/System.Net.Http.Formatting.NetCore.Test/packages.config
index a9b73688c..a2aac9ac3 100644
--- a/test/System.Net.Http.Formatting.NetCore.Test/packages.config
+++ b/test/System.Net.Http.Formatting.NetCore.Test/packages.config
@@ -6,11 +6,10 @@
   <package id="Microsoft.Net.Http" version="2.2.13" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Net.Http.Formatting.NetStandard.Test/System.Net.Http.Formatting.NetStandard.Test.csproj b/test/System.Net.Http.Formatting.NetStandard.Test/System.Net.Http.Formatting.NetStandard.Test.csproj
index 0ba9ccf62..35d7373d5 100644
--- a/test/System.Net.Http.Formatting.NetStandard.Test/System.Net.Http.Formatting.NetStandard.Test.csproj
+++ b/test/System.Net.Http.Formatting.NetStandard.Test/System.Net.Http.Formatting.NetStandard.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -32,19 +33,19 @@
     <Reference Include="System.Net.Http" />
     <Reference Include="System.Xml" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -311,5 +312,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/System.Net.Http.Formatting.NetStandard.Test/packages.config b/test/System.Net.Http.Formatting.NetStandard.Test/packages.config
index c6fe0a92f..5a6d0d533 100644
--- a/test/System.Net.Http.Formatting.NetStandard.Test/packages.config
+++ b/test/System.Net.Http.Formatting.NetStandard.Test/packages.config
@@ -3,11 +3,10 @@
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="9.0.1" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Net.Http.Formatting.Test/System.Net.Http.Formatting.Test.csproj b/test/System.Net.Http.Formatting.Test/System.Net.Http.Formatting.Test.csproj
index aae9a2309..f75ba8512 100644
--- a/test/System.Net.Http.Formatting.Test/System.Net.Http.Formatting.Test.csproj
+++ b/test/System.Net.Http.Formatting.Test/System.Net.Http.Formatting.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -34,19 +35,19 @@
     <Reference Include="System.XML" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -190,5 +191,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/System.Net.Http.Formatting.Test/packages.config b/test/System.Net.Http.Formatting.Test/packages.config
index fb2a3a2fc..07af0ca82 100644
--- a/test/System.Net.Http.Formatting.Test/packages.config
+++ b/test/System.Net.Http.Formatting.Test/packages.config
@@ -3,11 +3,10 @@
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Web.Cors.Test/System.Web.Cors.Test.csproj b/test/System.Web.Cors.Test/System.Web.Cors.Test.csproj
index b861f422c..934bcab50 100644
--- a/test/System.Web.Cors.Test/System.Web.Cors.Test.csproj
+++ b/test/System.Web.Cors.Test/System.Web.Cors.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -25,19 +26,19 @@
     <Reference Include="System.Configuration" />
     <Reference Include="System.Core" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -72,5 +73,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/System.Web.Cors.Test/packages.config b/test/System.Web.Cors.Test/packages.config
index 96c2d307e..2debdd5e9 100644
--- a/test/System.Web.Cors.Test/packages.config
+++ b/test/System.Web.Cors.Test/packages.config
@@ -2,11 +2,10 @@
 <packages>
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Web.Helpers.Test/System.Web.Helpers.Test.csproj b/test/System.Web.Helpers.Test/System.Web.Helpers.Test.csproj
index e0a3d32a7..7f5fc747f 100644
--- a/test/System.Web.Helpers.Test/System.Web.Helpers.Test.csproj
+++ b/test/System.Web.Helpers.Test/System.Web.Helpers.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -30,19 +31,19 @@
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System.XML" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -98,5 +99,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/System.Web.Helpers.Test/packages.config b/test/System.Web.Helpers.Test/packages.config
index 96c2d307e..2debdd5e9 100644
--- a/test/System.Web.Helpers.Test/packages.config
+++ b/test/System.Web.Helpers.Test/packages.config
@@ -2,11 +2,10 @@
 <packages>
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Web.Http.Cors.Test/System.Web.Http.Cors.Test.csproj b/test/System.Web.Http.Cors.Test/System.Web.Http.Cors.Test.csproj
index 51eb771a5..d47dcde87 100644
--- a/test/System.Web.Http.Cors.Test/System.Web.Http.Cors.Test.csproj
+++ b/test/System.Web.Http.Cors.Test/System.Web.Http.Cors.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -30,19 +31,19 @@
     <Reference Include="System.Net.Http" />
     <Reference Include="System.XML" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -101,5 +102,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/System.Web.Http.Cors.Test/packages.config b/test/System.Web.Http.Cors.Test/packages.config
index fb2a3a2fc..07af0ca82 100644
--- a/test/System.Web.Http.Cors.Test/packages.config
+++ b/test/System.Web.Http.Cors.Test/packages.config
@@ -3,11 +3,10 @@
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Web.Http.Integration.Test/System.Web.Http.Integration.Test.csproj b/test/System.Web.Http.Integration.Test/System.Web.Http.Integration.Test.csproj
index 81af127b7..294c16147 100644
--- a/test/System.Web.Http.Integration.Test/System.Web.Http.Integration.Test.csproj
+++ b/test/System.Web.Http.Integration.Test/System.Web.Http.Integration.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -38,19 +39,19 @@
     <Reference Include="System.Data" />
     <Reference Include="System.Xml" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -155,5 +156,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/System.Web.Http.Integration.Test/packages.config b/test/System.Web.Http.Integration.Test/packages.config
index fb2a3a2fc..07af0ca82 100644
--- a/test/System.Web.Http.Integration.Test/packages.config
+++ b/test/System.Web.Http.Integration.Test/packages.config
@@ -3,11 +3,10 @@
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Web.Http.Owin.Test/System.Web.Http.Owin.Test.csproj b/test/System.Web.Http.Owin.Test/System.Web.Http.Owin.Test.csproj
index bc591f866..76428ce20 100644
--- a/test/System.Web.Http.Owin.Test/System.Web.Http.Owin.Test.csproj
+++ b/test/System.Web.Http.Owin.Test/System.Web.Http.Owin.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -44,19 +45,19 @@
     <Reference Include="System.Net.Http" />
     <Reference Include="System.Xml" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -111,5 +112,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/System.Web.Http.Owin.Test/packages.config b/test/System.Web.Http.Owin.Test/packages.config
index e0ea078f4..0362548bc 100644
--- a/test/System.Web.Http.Owin.Test/packages.config
+++ b/test/System.Web.Http.Owin.Test/packages.config
@@ -7,11 +7,10 @@
   <package id="Moq" version="4.7.142" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net452" />
   <package id="Owin" version="1.0" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Web.Http.SelfHost.Test/System.Web.Http.SelfHost.Test.csproj b/test/System.Web.Http.SelfHost.Test/System.Web.Http.SelfHost.Test.csproj
index c1d177595..a9fe19999 100644
--- a/test/System.Web.Http.SelfHost.Test/System.Web.Http.SelfHost.Test.csproj
+++ b/test/System.Web.Http.SelfHost.Test/System.Web.Http.SelfHost.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -36,19 +37,19 @@
     <Reference Include="System.XML" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -106,5 +107,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/System.Web.Http.SelfHost.Test/packages.config b/test/System.Web.Http.SelfHost.Test/packages.config
index fb2a3a2fc..07af0ca82 100644
--- a/test/System.Web.Http.SelfHost.Test/packages.config
+++ b/test/System.Web.Http.SelfHost.Test/packages.config
@@ -3,11 +3,10 @@
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Web.Http.SignalR.Test/System.Web.Http.SignalR.Test.csproj b/test/System.Web.Http.SignalR.Test/System.Web.Http.SignalR.Test.csproj
index 65a7c31ac..063ea3d3d 100644
--- a/test/System.Web.Http.SignalR.Test/System.Web.Http.SignalR.Test.csproj
+++ b/test/System.Web.Http.SignalR.Test/System.Web.Http.SignalR.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -34,19 +35,19 @@
     <Reference Include="System.Net.Http.WebRequest" />
     <Reference Include="System.Xml" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -86,5 +87,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/System.Web.Http.SignalR.Test/packages.config b/test/System.Web.Http.SignalR.Test/packages.config
index 7c41269fc..9a802bafc 100644
--- a/test/System.Web.Http.SignalR.Test/packages.config
+++ b/test/System.Web.Http.SignalR.Test/packages.config
@@ -4,11 +4,10 @@
   <package id="Microsoft.AspNet.SignalR.Core" version="1.0.0" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Web.Http.Test/System.Web.Http.Test.csproj b/test/System.Web.Http.Test/System.Web.Http.Test.csproj
index 2f5f7905b..874f3ec65 100644
--- a/test/System.Web.Http.Test/System.Web.Http.Test.csproj
+++ b/test/System.Web.Http.Test/System.Web.Http.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -39,19 +40,19 @@
     <Reference Include="System.XML" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -410,5 +411,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/System.Web.Http.Test/packages.config b/test/System.Web.Http.Test/packages.config
index fb2a3a2fc..07af0ca82 100644
--- a/test/System.Web.Http.Test/packages.config
+++ b/test/System.Web.Http.Test/packages.config
@@ -3,11 +3,10 @@
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Web.Http.Tracing.Test/System.Web.Http.Tracing.Test.csproj b/test/System.Web.Http.Tracing.Test/System.Web.Http.Tracing.Test.csproj
index 55f8b89cc..6d491e7f7 100644
--- a/test/System.Web.Http.Tracing.Test/System.Web.Http.Tracing.Test.csproj
+++ b/test/System.Web.Http.Tracing.Test/System.Web.Http.Tracing.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -23,19 +24,19 @@
     <Reference Include="System.Net.Http.WebRequest" />
     <Reference Include="System.Xml" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -74,7 +75,10 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
diff --git a/test/System.Web.Http.Tracing.Test/packages.config b/test/System.Web.Http.Tracing.Test/packages.config
index c2c499b74..b60668b45 100644
--- a/test/System.Web.Http.Tracing.Test/packages.config
+++ b/test/System.Web.Http.Tracing.Test/packages.config
@@ -1,11 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Web.Http.WebHost.Test/System.Web.Http.WebHost.Test.csproj b/test/System.Web.Http.WebHost.Test/System.Web.Http.WebHost.Test.csproj
index 737094c54..168d492a0 100644
--- a/test/System.Web.Http.WebHost.Test/System.Web.Http.WebHost.Test.csproj
+++ b/test/System.Web.Http.WebHost.Test/System.Web.Http.WebHost.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -33,19 +34,19 @@
     <Reference Include="System.Web" />
     <Reference Include="System.Xml" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -109,5 +110,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/System.Web.Http.WebHost.Test/packages.config b/test/System.Web.Http.WebHost.Test/packages.config
index fb2a3a2fc..07af0ca82 100644
--- a/test/System.Web.Http.WebHost.Test/packages.config
+++ b/test/System.Web.Http.WebHost.Test/packages.config
@@ -3,11 +3,10 @@
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Web.Mvc.Test/System.Web.Mvc.Test.csproj b/test/System.Web.Mvc.Test/System.Web.Mvc.Test.csproj
index 6882918d9..58a4ba655 100644
--- a/test/System.Web.Mvc.Test/System.Web.Mvc.Test.csproj
+++ b/test/System.Web.Mvc.Test/System.Web.Mvc.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -40,19 +41,19 @@
     <Reference Include="System.Web.Abstractions" />
     <Reference Include="System.Web.Extensions" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -419,5 +420,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/System.Web.Mvc.Test/packages.config b/test/System.Web.Mvc.Test/packages.config
index fb2a3a2fc..07af0ca82 100644
--- a/test/System.Web.Mvc.Test/packages.config
+++ b/test/System.Web.Mvc.Test/packages.config
@@ -3,11 +3,10 @@
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Web.Razor.Test/System.Web.Razor.Test.csproj b/test/System.Web.Razor.Test/System.Web.Razor.Test.csproj
index d19184db0..dd7a7fd1c 100644
--- a/test/System.Web.Razor.Test/System.Web.Razor.Test.csproj
+++ b/test/System.Web.Razor.Test/System.Web.Razor.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -29,19 +30,19 @@
       <RequiredTargetFramework>3.5</RequiredTargetFramework>
     </Reference>
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -480,5 +481,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/System.Web.Razor.Test/packages.config b/test/System.Web.Razor.Test/packages.config
index 96c2d307e..2debdd5e9 100644
--- a/test/System.Web.Razor.Test/packages.config
+++ b/test/System.Web.Razor.Test/packages.config
@@ -2,11 +2,10 @@
 <packages>
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Web.WebPages.Administration.Test/System.Web.WebPages.Administration.Test.csproj b/test/System.Web.WebPages.Administration.Test/System.Web.WebPages.Administration.Test.csproj
index 55a23f2bd..dc2ccf57d 100644
--- a/test/System.Web.WebPages.Administration.Test/System.Web.WebPages.Administration.Test.csproj
+++ b/test/System.Web.WebPages.Administration.Test/System.Web.WebPages.Administration.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -35,19 +36,19 @@
     <Reference Include="System.XML" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -96,5 +97,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/System.Web.WebPages.Administration.Test/packages.config b/test/System.Web.WebPages.Administration.Test/packages.config
index 711d9ed22..019d60adc 100644
--- a/test/System.Web.WebPages.Administration.Test/packages.config
+++ b/test/System.Web.WebPages.Administration.Test/packages.config
@@ -3,11 +3,10 @@
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
   <package id="Nuget.Core" version="1.6.2" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Web.WebPages.Deployment.Test/System.Web.WebPages.Deployment.Test.csproj b/test/System.Web.WebPages.Deployment.Test/System.Web.WebPages.Deployment.Test.csproj
index 8cb3f8ed0..07737fd56 100644
--- a/test/System.Web.WebPages.Deployment.Test/System.Web.WebPages.Deployment.Test.csproj
+++ b/test/System.Web.WebPages.Deployment.Test/System.Web.WebPages.Deployment.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -17,19 +18,19 @@
     <Reference Include="System" />
     <Reference Include="System.Web" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -88,5 +89,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/System.Web.WebPages.Deployment.Test/packages.config b/test/System.Web.WebPages.Deployment.Test/packages.config
index 64fb5d7b3..510c41585 100644
--- a/test/System.Web.WebPages.Deployment.Test/packages.config
+++ b/test/System.Web.WebPages.Deployment.Test/packages.config
@@ -1,10 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Web.WebPages.Razor.Test/System.Web.WebPages.Razor.Test.csproj b/test/System.Web.WebPages.Razor.Test/System.Web.WebPages.Razor.Test.csproj
index 00ec93619..b589027be 100644
--- a/test/System.Web.WebPages.Razor.Test/System.Web.WebPages.Razor.Test.csproj
+++ b/test/System.Web.WebPages.Razor.Test/System.Web.WebPages.Razor.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -35,19 +36,19 @@
     <Reference Include="System.Configuration" />
     <Reference Include="System.Web" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -84,5 +85,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/System.Web.WebPages.Razor.Test/packages.config b/test/System.Web.WebPages.Razor.Test/packages.config
index 96c2d307e..2debdd5e9 100644
--- a/test/System.Web.WebPages.Razor.Test/packages.config
+++ b/test/System.Web.WebPages.Razor.Test/packages.config
@@ -2,11 +2,10 @@
 <packages>
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/System.Web.WebPages.Test/System.Web.WebPages.Test.csproj b/test/System.Web.WebPages.Test/System.Web.WebPages.Test.csproj
index d5f015fd8..f82d588ab 100644
--- a/test/System.Web.WebPages.Test/System.Web.WebPages.Test.csproj
+++ b/test/System.Web.WebPages.Test/System.Web.WebPages.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -30,19 +31,19 @@
     <Reference Include="System.Data.Linq" />
     <Reference Include="System.Web" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -187,5 +188,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/System.Web.WebPages.Test/packages.config b/test/System.Web.WebPages.Test/packages.config
index 96c2d307e..2debdd5e9 100644
--- a/test/System.Web.WebPages.Test/packages.config
+++ b/test/System.Web.WebPages.Test/packages.config
@@ -2,11 +2,10 @@
 <packages>
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/WebApiHelpPage.Test/WebApiHelpPage.Test.csproj b/test/WebApiHelpPage.Test/WebApiHelpPage.Test.csproj
index c8af4f0db..bb92f0654 100644
--- a/test/WebApiHelpPage.Test/WebApiHelpPage.Test.csproj
+++ b/test/WebApiHelpPage.Test/WebApiHelpPage.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -40,19 +41,19 @@
     <Reference Include="System.Data" />
     <Reference Include="System.Xml" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -141,7 +142,10 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
diff --git a/test/WebApiHelpPage.Test/packages.config b/test/WebApiHelpPage.Test/packages.config
index ac2905b94..f3b2db74e 100644
--- a/test/WebApiHelpPage.Test/packages.config
+++ b/test/WebApiHelpPage.Test/packages.config
@@ -4,11 +4,10 @@
   <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/WebApiHelpPage.VB.Test/WebApiHelpPage.VB.Test.csproj b/test/WebApiHelpPage.VB.Test/WebApiHelpPage.VB.Test.csproj
index c2d0e05c3..4b2772809 100644
--- a/test/WebApiHelpPage.VB.Test/WebApiHelpPage.VB.Test.csproj
+++ b/test/WebApiHelpPage.VB.Test/WebApiHelpPage.VB.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -40,19 +41,19 @@
     <Reference Include="System.Data" />
     <Reference Include="System.Xml" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -175,7 +176,10 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">
diff --git a/test/WebMatrix.Data.Test/WebMatrix.Data.Test.csproj b/test/WebMatrix.Data.Test/WebMatrix.Data.Test.csproj
index 083126d0c..51237080d 100644
--- a/test/WebMatrix.Data.Test/WebMatrix.Data.Test.csproj
+++ b/test/WebMatrix.Data.Test/WebMatrix.Data.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -29,19 +30,19 @@
     </Reference>
     <Reference Include="System.Data" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
       <Private>True</Private>
     </Reference>
   </ItemGroup>
@@ -82,5 +83,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/WebMatrix.Data.Test/packages.config b/test/WebMatrix.Data.Test/packages.config
index 96c2d307e..2debdd5e9 100644
--- a/test/WebMatrix.Data.Test/packages.config
+++ b/test/WebMatrix.Data.Test/packages.config
@@ -2,11 +2,10 @@
 <packages>
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file
diff --git a/test/WebMatrix.WebData.Test/WebMatrix.WebData.Test.csproj b/test/WebMatrix.WebData.Test/WebMatrix.WebData.Test.csproj
index 176e4fe53..f3069643e 100644
--- a/test/WebMatrix.WebData.Test/WebMatrix.WebData.Test.csproj
+++ b/test/WebMatrix.WebData.Test/WebMatrix.WebData.Test.csproj
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.props" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" />
   <Import Project="..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props" Condition="Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" />
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory),Runtime.sln))\tools\WebStack.settings.targets" />
   <PropertyGroup>
@@ -29,20 +30,19 @@
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System.Data" />
     <Reference Include="xunit.abstractions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.abstractions.2.0.0\lib\net35\xunit.abstractions.dll</HintPath>
+      <HintPath>..\..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.assert, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.assert.2.1.0\lib\dotnet\xunit.assert.dll</HintPath>
+    <Reference Include="xunit.assert, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.assert.2.3.0\lib\netstandard1.1\xunit.assert.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.core, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.core.2.1.0\lib\dotnet\xunit.core.dll</HintPath>
+    <Reference Include="xunit.core, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.core.2.3.0\lib\netstandard1.1\xunit.core.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="xunit.execution.desktop, Version=2.1.0.3179, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
-      <HintPath>..\..\packages\xunit.extensibility.execution.2.1.0\lib\net45\xunit.execution.desktop.dll</HintPath>
-      <Private>True</Private>
+    <Reference Include="xunit.execution.desktop, Version=2.3.0.3820, Culture=neutral, PublicKeyToken=8d05b1bb7a6fdb6c, processorArchitecture=MSIL">
+      <HintPath>..\..\packages\xunit.extensibility.execution.2.3.0\lib\net452\xunit.execution.desktop.dll</HintPath>
     </Reference>
   </ItemGroup>
   <ItemGroup>
@@ -86,5 +86,8 @@
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
     <Error Condition="!Exists('..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.runner.visualstudio.2.1.0\build\net20\xunit.runner.visualstudio.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.props'))" />
+    <Error Condition="!Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\xunit.core.2.3.0\build\xunit.core.targets'))" />
   </Target>
+  <Import Project="..\..\packages\xunit.core.2.3.0\build\xunit.core.targets" Condition="Exists('..\..\packages\xunit.core.2.3.0\build\xunit.core.targets')" />
 </Project>
\ No newline at end of file
diff --git a/test/WebMatrix.WebData.Test/packages.config b/test/WebMatrix.WebData.Test/packages.config
index 96c2d307e..2debdd5e9 100644
--- a/test/WebMatrix.WebData.Test/packages.config
+++ b/test/WebMatrix.WebData.Test/packages.config
@@ -2,11 +2,10 @@
 <packages>
   <package id="Castle.Core" version="4.2.1" targetFramework="net452" />
   <package id="Moq" version="4.7.142" targetFramework="net452" />
-  <package id="xunit" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.abstractions" version="2.0.0" targetFramework="net452" />
-  <package id="xunit.assert" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.core" version="2.1.0" targetFramework="net452" />
-  <package id="xunit.extensibility.execution" version="2.1.0" targetFramework="net452" />
+  <package id="xunit.abstractions" version="2.0.1" targetFramework="net452" />
+  <package id="xunit.assert" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.core" version="2.3.0" targetFramework="net452" />
+  <package id="xunit.extensibility.execution" version="2.3.0" targetFramework="net452" />
   <package id="xunit.runner.visualstudio" version="2.1.0" targetFramework="net452" />
 </packages>
\ No newline at end of file