diff --git a/Samples/ServiceAPI/CSharp/GoogleAuthPlugin/packages.config b/Samples/ServiceAPI/CSharp/GoogleAuthPlugin/packages.config
index f46a5520..6e079d65 100644
--- a/Samples/ServiceAPI/CSharp/GoogleAuthPlugin/packages.config
+++ b/Samples/ServiceAPI/CSharp/GoogleAuthPlugin/packages.config
@@ -4,7 +4,7 @@
   <package id="Microsoft.Bcl" version="1.1.10" targetFramework="net45" />
   <package id="Microsoft.Bcl.Build" version="1.0.14" targetFramework="net45" />
   <package id="Microsoft.Net.Http" version="2.2.29" targetFramework="net45" />
-  <package id="ServiceStack" version="4.5.14" targetFramework="net45" />
+  <package id="ServiceStack" version="5.9.2" targetFramework="net45" />
   <package id="ServiceStack.Authentication.OAuth2" version="4.5.14" targetFramework="net45" />
   <package id="ServiceStack.Client" version="4.5.14" targetFramework="net45" />
   <package id="ServiceStack.Common" version="4.5.14" targetFramework="net45" />