diff --git a/UserInterfaces/WebApp/packages.config b/UserInterfaces/WebApp/packages.config
index 0314311..4a7e2a8 100644
--- a/UserInterfaces/WebApp/packages.config
+++ b/UserInterfaces/WebApp/packages.config
@@ -18,7 +18,7 @@
   <package id="Microsoft.AspNet.WebApi.WebHost" version="5.2.7" targetFramework="net462" />
   <package id="Microsoft.AspNet.WebApi.WebHost.zh-Hans" version="5.2.7" targetFramework="net462" />
   <package id="Microsoft.CodeDom.Providers.DotNetCompilerPlatform" version="2.0.1" targetFramework="net462" />
-  <package id="Microsoft.Owin" version="4.0.1" targetFramework="net462" />
+  <package id="Microsoft.Owin" version="4.1.1" targetFramework="net462" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="4.0.1" targetFramework="net462" />
   <package id="Microsoft.Owin.Host.SystemWeb.zh-Hans" version="4.0.1" targetFramework="net462" />
   <package id="Microsoft.Owin.Security" version="4.0.1" targetFramework="net462" />