diff --git a/2015/SelfHostWithBetterRoutingForEmbeddedResources/SelfHostWithBetterRouting/packages.config b/2015/SelfHostWithBetterRoutingForEmbeddedResources/SelfHostWithBetterRouting/packages.config
index 3de25604..ba3404fe 100644
--- a/2015/SelfHostWithBetterRoutingForEmbeddedResources/SelfHostWithBetterRouting/packages.config
+++ b/2015/SelfHostWithBetterRoutingForEmbeddedResources/SelfHostWithBetterRouting/packages.config
@@ -4,7 +4,7 @@
   <package id="Microsoft.AspNet.WebApi.Core" version="5.2.3" targetFramework="net452" />
   <package id="Microsoft.AspNet.WebApi.Owin" version="5.2.3" targetFramework="net452" />
   <package id="Microsoft.AspNet.WebApi.OwinSelfHost" version="5.2.3" targetFramework="net452" />
-  <package id="Microsoft.Owin" version="2.0.2" targetFramework="net452" />
+  <package id="Microsoft.Owin" version="4.0.0" targetFramework="net452" />
   <package id="Microsoft.Owin.Host.HttpListener" version="2.0.2" targetFramework="net452" />
   <package id="Microsoft.Owin.Hosting" version="2.0.2" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="6.0.4" targetFramework="net452" />