diff --git a/DotNetRichClientOAuth2/MvcCodeFlowClientManual/packages.config b/DotNetRichClientOAuth2/MvcCodeFlowClientManual/packages.config
index 032f007..9fe3b77 100644
--- a/DotNetRichClientOAuth2/MvcCodeFlowClientManual/packages.config
+++ b/DotNetRichClientOAuth2/MvcCodeFlowClientManual/packages.config
@@ -10,7 +10,7 @@
   <package id="Microsoft.Bcl" version="1.1.9" targetFramework="net45" />
   <package id="Microsoft.Bcl.Build" version="1.0.21" targetFramework="net45" />
   <package id="Microsoft.Net.Http" version="2.2.28" targetFramework="net45" />
-  <package id="Microsoft.Owin" version="3.0.0" targetFramework="net45" />
+  <package id="Microsoft.Owin" version="4.0.0" targetFramework="net45" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="3.0.0" targetFramework="net45" />
   <package id="Microsoft.Owin.Security" version="3.0.0" targetFramework="net45" />
   <package id="Microsoft.Owin.Security.Cookies" version="3.0.0" targetFramework="net45" />