diff --git a/SignalR-Sample/packages.config b/SignalR-Sample/packages.config
index 2f41729..b329a52 100644
--- a/SignalR-Sample/packages.config
+++ b/SignalR-Sample/packages.config
@@ -15,7 +15,7 @@
   <package id="Microsoft.AspNet.WebPages" version="3.2.7" targetFramework="net472" />
   <package id="Microsoft.CodeDom.Providers.DotNetCompilerPlatform" version="2.0.1" targetFramework="net472" />
   <package id="Microsoft.jQuery.Unobtrusive.Validation" version="3.2.11" targetFramework="net472" />
-  <package id="Microsoft.Owin" version="2.1.0" targetFramework="net472" />
+  <package id="Microsoft.Owin" version="4.0.0" targetFramework="net472" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="2.1.0" targetFramework="net472" />
   <package id="Microsoft.Owin.Security" version="2.1.0" targetFramework="net472" />
   <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net472" />