diff --git a/SignalR/Server/packages.config b/SignalR/Server/packages.config
index 15f82801..94c2efa3 100644
--- a/SignalR/Server/packages.config
+++ b/SignalR/Server/packages.config
@@ -19,7 +19,7 @@
   <package id="Microsoft.AspNet.WebApi.WebHost" version="5.2.7" targetFramework="net48" />
   <package id="Microsoft.AspNet.WebPages" version="3.2.7" targetFramework="net48" />
   <package id="Microsoft.CodeDom.Providers.DotNetCompilerPlatform" version="2.0.1" targetFramework="net48" />
-  <package id="Microsoft.Owin" version="2.1.0" targetFramework="net48" />
+  <package id="Microsoft.Owin" version="4.0.0" targetFramework="net48" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="2.1.0" targetFramework="net48" />
   <package id="Microsoft.Owin.Security" version="2.1.0" targetFramework="net48" />
   <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net48" />