diff --git a/2016/IdentityTest/IdentityTest.IdServerHost/packages.config b/2016/IdentityTest/IdentityTest.IdServerHost/packages.config
index 1eb116b5..90ef4493 100644
--- a/2016/IdentityTest/IdentityTest.IdServerHost/packages.config
+++ b/2016/IdentityTest/IdentityTest.IdServerHost/packages.config
@@ -7,7 +7,7 @@
   <package id="Microsoft.CodeDom.Providers.DotNetCompilerPlatform" version="1.0.0" targetFramework="net452" />
   <package id="Microsoft.IdentityModel.Protocol.Extensions" version="1.0.0" targetFramework="net452" />
   <package id="Microsoft.Net.Compilers" version="1.0.0" targetFramework="net452" developmentDependency="true" />
-  <package id="Microsoft.Owin" version="3.0.1" targetFramework="net452" />
+  <package id="Microsoft.Owin" version="4.0.0" targetFramework="net452" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="3.0.1" targetFramework="net452" />
   <package id="Microsoft.Owin.Security" version="3.0.1" targetFramework="net452" />
   <package id="Microsoft.Owin.Security.Google" version="3.0.1" targetFramework="net452" />