diff --git a/DMS.Web/DMS.Web/packages.config b/DMS.Web/DMS.Web/packages.config
index d1a4c7a..9cc9f8c 100644
--- a/DMS.Web/DMS.Web/packages.config
+++ b/DMS.Web/DMS.Web/packages.config
@@ -15,7 +15,7 @@
   <package id="Microsoft.AspNet.Web.Optimization" version="1.1.1" targetFramework="net45" />
   <package id="Microsoft.AspNet.WebPages" version="3.0.0" targetFramework="net45" />
   <package id="Microsoft.jQuery.Unobtrusive.Validation" version="3.0.0" targetFramework="net45" />
-  <package id="Microsoft.Owin" version="2.0.0" targetFramework="net45" />
+  <package id="Microsoft.Owin" version="4.0.0" targetFramework="net45" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="2.0.0" targetFramework="net45" />
   <package id="Microsoft.Owin.Security" version="2.0.0" targetFramework="net45" />
   <package id="Microsoft.Owin.Security.Cookies" version="2.0.0" targetFramework="net45" />