diff --git a/Ads-REST-Services/Ads.Web/packages.config b/Ads-REST-Services/Ads.Web/packages.config
index 71efb3a..cb58320 100644
--- a/Ads-REST-Services/Ads.Web/packages.config
+++ b/Ads-REST-Services/Ads.Web/packages.config
@@ -22,7 +22,7 @@
   <package id="Microsoft.AspNet.WebApi.WebHost" version="5.2.2" targetFramework="net45" />
   <package id="Microsoft.AspNet.WebPages" version="3.2.2" targetFramework="net45" />
   <package id="Microsoft.jQuery.Unobtrusive.Validation" version="3.2.2" targetFramework="net45" />
-  <package id="Microsoft.Owin" version="3.0.1" targetFramework="net45" />
+  <package id="Microsoft.Owin" version="4.1.1" targetFramework="net45" />
   <package id="Microsoft.Owin.Cors" version="3.0.0" targetFramework="net45" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="3.0.0" targetFramework="net45" />
   <package id="Microsoft.Owin.Hosting" version="3.0.1" targetFramework="net45" />