diff --git a/2013/OwinKatanaAndOneAspNet/OwinWithWebApiAndNancy/packages.config b/2013/OwinKatanaAndOneAspNet/OwinWithWebApiAndNancy/packages.config
index 64807453..6eda927f 100644
--- a/2013/OwinKatanaAndOneAspNet/OwinWithWebApiAndNancy/packages.config
+++ b/2013/OwinKatanaAndOneAspNet/OwinWithWebApiAndNancy/packages.config
@@ -3,7 +3,7 @@
   <package id="Microsoft.AspNet.WebApi.Client" version="5.0.0-rc1" targetFramework="net45" />
   <package id="Microsoft.AspNet.WebApi.Core" version="5.0.0-rc1" targetFramework="net45" />
   <package id="Microsoft.AspNet.WebApi.Owin" version="5.0.0-rc1" targetFramework="net45" />
-  <package id="Microsoft.Owin" version="2.0.0-rc1" targetFramework="net45" />
+  <package id="Microsoft.Owin" version="4.0.0" targetFramework="net45" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="2.0.0-rc1" targetFramework="net45" />
   <package id="Nancy" version="0.20.0" targetFramework="net45" />
   <package id="Nancy.Owin" version="0.20.0" targetFramework="net45" />