diff --git a/samples/Source Control System API/Server/SourceControlSystem.Api/packages.config b/samples/Source Control System API/Server/SourceControlSystem.Api/packages.config
index ba8a2890..f1b86faa 100644
--- a/samples/Source Control System API/Server/SourceControlSystem.Api/packages.config	
+++ b/samples/Source Control System API/Server/SourceControlSystem.Api/packages.config	
@@ -29,7 +29,7 @@
   <package id="Microsoft.CodeDom.Providers.DotNetCompilerPlatform" version="1.0.1" targetFramework="net452" />
   <package id="Microsoft.jQuery.Unobtrusive.Validation" version="3.2.3" targetFramework="net452" />
   <package id="Microsoft.Net.Compilers" version="1.3.2" 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.Cookies" version="3.0.1" targetFramework="net452" />