diff --git a/Zone.UmbracoMapper/packages.config b/Zone.UmbracoMapper/packages.config
index 1a29004..740c9ac 100644
--- a/Zone.UmbracoMapper/packages.config
+++ b/Zone.UmbracoMapper/packages.config
@@ -21,7 +21,7 @@
   <package id="Microsoft.AspNet.WebApi.WebHost" version="5.2.3" targetFramework="net45" />
   <package id="Microsoft.AspNet.WebPages" version="3.2.3" targetFramework="net45" />
   <package id="Microsoft.Net.Http" version="2.0.20710.0" targetFramework="net45" />
-  <package id="Microsoft.Owin" version="3.0.1" targetFramework="net45" />
+  <package id="Microsoft.Owin" version="4.0.0" targetFramework="net45" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="3.0.1" targetFramework="net45" />
   <package id="Microsoft.Owin.Security" version="3.0.1" targetFramework="net45" />
   <package id="Microsoft.Owin.Security.Cookies" version="3.0.1" targetFramework="net45" />