diff --git a/Web/JSViewer_MVC/packages.config b/Web/JSViewer_MVC/packages.config
index 277ab63..b0d1a64 100644
--- a/Web/JSViewer_MVC/packages.config
+++ b/Web/JSViewer_MVC/packages.config
@@ -4,7 +4,7 @@
   <package id="Microsoft.AspNet.Mvc" version="5.2.6" targetFramework="net462" />
   <package id="Microsoft.AspNet.Razor" version="3.2.6" targetFramework="net462" />
   <package id="Microsoft.AspNet.WebPages" version="3.2.6" targetFramework="net462" />
-  <package id="Microsoft.Owin" version="4.0.0" targetFramework="net462" />
+  <package id="Microsoft.Owin" version="4.1.1" targetFramework="net462" />
   <package id="Microsoft.Owin.Diagnostics" version="4.0.0" targetFramework="net462" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="4.0.0" targetFramework="net462" />
   <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net45" />