diff --git a/Samples/ServiceAPI/CSharp/OpenIdConnectPlugin/OpenIdConnectPlugin/packages.config b/Samples/ServiceAPI/CSharp/OpenIdConnectPlugin/OpenIdConnectPlugin/packages.config
index 28d5e382..2b3e8dda 100644
--- a/Samples/ServiceAPI/CSharp/OpenIdConnectPlugin/OpenIdConnectPlugin/packages.config
+++ b/Samples/ServiceAPI/CSharp/OpenIdConnectPlugin/OpenIdConnectPlugin/packages.config
@@ -8,7 +8,7 @@
   <package id="Microsoft.IdentityModel.Tokens" version="5.2.2" targetFramework="net45" />
   <package id="Microsoft.Net.Http" version="2.2.29" targetFramework="net45" />
   <package id="Newtonsoft.Json" version="10.0.1" targetFramework="net45" />
-  <package id="ServiceStack" version="4.5.14" targetFramework="net45" />
+  <package id="ServiceStack" version="5.9.2" targetFramework="net45" />
   <package id="ServiceStack.Client" version="4.5.14" targetFramework="net45" />
   <package id="ServiceStack.Common" version="4.5.14" targetFramework="net45" />
   <package id="ServiceStack.Interfaces" version="4.5.14" targetFramework="net45" />