diff --git a/Training/Training/packages.config b/Training/Training/packages.config
index a97b9e6..3c071af 100644
--- a/Training/Training/packages.config
+++ b/Training/Training/packages.config
@@ -21,7 +21,7 @@
   <package id="Microsoft.AspNet.WebPages" version="3.2.3" targetFramework="net46" />
   <package id="Microsoft.CodeDom.Providers.DotNetCompilerPlatform" version="1.0.0" targetFramework="net46" />
   <package id="Microsoft.Net.Compilers" version="1.0.0" targetFramework="net46" developmentDependency="true" />
-  <package id="Microsoft.Owin" version="3.0.1" targetFramework="net46" />
+  <package id="Microsoft.Owin" version="4.0.0" targetFramework="net46" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="3.0.1" targetFramework="net46" />
   <package id="Microsoft.Owin.Security" version="3.0.1" targetFramework="net46" />
   <package id="Microsoft.Owin.Security.Cookies" version="3.0.1" targetFramework="net46" />