diff --git a/src/ServiceStack.Northwind/ServiceStack.Northwind.ServiceInterface/packages.config b/src/ServiceStack.Northwind/ServiceStack.Northwind.ServiceInterface/packages.config
index 4534703d..3642b649 100644
--- a/src/ServiceStack.Northwind/ServiceStack.Northwind.ServiceInterface/packages.config
+++ b/src/ServiceStack.Northwind/ServiceStack.Northwind.ServiceInterface/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="ServiceStack" version="4.5.0" targetFramework="net45" />
+  <package id="ServiceStack" version="5.9.2" targetFramework="net45" />
   <package id="ServiceStack.Client" version="4.5.0" targetFramework="net45" />
   <package id="ServiceStack.Common" version="4.5.0" targetFramework="net45" />
   <package id="ServiceStack.Interfaces" version="4.5.0" targetFramework="net45" />