diff --git a/Engine/Engine.csproj b/Engine/Engine.csproj
index 1517d5a78..40e96aa50 100644
--- a/Engine/Engine.csproj
+++ b/Engine/Engine.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <VersionPrefix>1.17.1</VersionPrefix>
@@ -10,7 +10,6 @@
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net451' ">
     <Reference Include="System.ComponentModel.Composition" />
-    <Reference Include="System" />
   </ItemGroup>
 
   <PropertyGroup Condition=" '$(TargetFramework)' == 'net451' ">
@@ -61,7 +60,7 @@
   </ItemGroup>
    
   <ItemGroup Condition="'$(TargetFramework)' == 'net451' AND '$(Configuration)' != 'PSV3Release'">
-    <PackageReference Include="Microsoft.PowerShell.5.ReferenceAssemblies" Version="1.0.0" />
+    <PackageReference Include="Microsoft.PowerShell.5.ReferenceAssemblies" Version="1.1.0" />
   </ItemGroup>
 
   <PropertyGroup Condition=" '$(Configuration)' == 'PSV3Release' ">
diff --git a/Rules/Rules.csproj b/Rules/Rules.csproj
index 9587a75dd..f073885fb 100644
--- a/Rules/Rules.csproj
+++ b/Rules/Rules.csproj
@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <VersionPrefix>1.17.1</VersionPrefix>
@@ -18,8 +18,6 @@
   <ItemGroup Condition=" '$(TargetFramework)' == 'net451' ">
     <Reference Include="System.ComponentModel.Composition" />
     <Reference Include="System.Data.Entity.Design" />
-    <Reference Include="System" />
-    <Reference Include="Microsoft.CSharp" />
   </ItemGroup>
 
   <PropertyGroup Condition=" '$(TargetFramework)' == 'net451' ">
@@ -48,21 +46,8 @@
   <ItemGroup Condition="'$(TargetFramework)' == 'net451' ">
     <PackageReference Include="Microsoft.Management.Infrastructure" Version="1.0.0-alpha08" />
   </ItemGroup>
-
-  <ItemGroup Condition="'$(TargetFramework)' == 'net451' AND '$(Configuration)' != 'PSV3Release'">
-    <PackageReference Include="Microsoft.PowerShell.5.ReferenceAssemblies" Version="1.0.0" />
-  </ItemGroup>
-
-  <ItemGroup Condition="'$(TargetFramework)' == 'net451' AND '$(Configuration)' == 'PSV4Release'">
-    <PackageReference Include="Microsoft.PowerShell.4.ReferenceAssemblies" Version="1.0.0" />
-  </ItemGroup>
-
-  <ItemGroup Condition="'$(TargetFramework)' == 'net451' AND '$(Configuration)' != 'PSV3Release'">
-    <PackageReference Include="Microsoft.PowerShell.5.ReferenceAssemblies" Version="1.0.0" />
-  </ItemGroup>
   
   <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
-    <PackageReference Include="System.Management.Automation" Version="6.0.2" />
     <PackageReference Include="Microsoft.Management.Infrastructure" Version="1.0.0-alpha*" />
     <PackageReference Include="System.Reflection.TypeExtensions" Version="4.4.0" />
     <Compile Remove="UseSingularNouns.cs" />