diff --git a/src/DefaultApp/DefaultApp/DefaultApp.AppMac/packages.config b/src/DefaultApp/DefaultApp/DefaultApp.AppMac/packages.config
index 2c86b9c..c789789 100644
--- a/src/DefaultApp/DefaultApp/DefaultApp.AppMac/packages.config
+++ b/src/DefaultApp/DefaultApp/DefaultApp.AppMac/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="ServiceStack" version="4.5.12" targetFramework="net452" />
+  <package id="ServiceStack" version="5.9.2" targetFramework="net452" />
   <package id="ServiceStack.Client" version="4.5.12" targetFramework="net452" />
   <package id="ServiceStack.Common" version="4.5.12" targetFramework="net452" />
   <package id="ServiceStack.Interfaces" version="4.5.12" targetFramework="net452" />