diff --git a/Source/Blog/Blog.Web/packages.config b/Source/Blog/Blog.Web/packages.config
index 20d46fa..0c93957 100644
--- a/Source/Blog/Blog.Web/packages.config
+++ b/Source/Blog/Blog.Web/packages.config
@@ -25,7 +25,7 @@
   <package id="Microsoft.AspNet.WebPages" version="3.1.0" targetFramework="net45" />
   <package id="Microsoft.AspNet.WebPages.zh-Hans" version="3.1.0" 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="4.2.2" targetFramework="net45" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="2.0.0" targetFramework="net45" />
   <package id="Microsoft.Owin.Host.SystemWeb.zh-Hans" version="2.0.0" targetFramework="net45" />
   <package id="Microsoft.Owin.Security" version="2.0.0" targetFramework="net45" />