diff --git a/Brighter/paramore.brighter.commandprocessor.tests/packages.config b/Brighter/paramore.brighter.commandprocessor.tests/packages.config
index ca8c6abe9e..df5f90303f 100644
--- a/Brighter/paramore.brighter.commandprocessor.tests/packages.config
+++ b/Brighter/paramore.brighter.commandprocessor.tests/packages.config
@@ -11,7 +11,7 @@
   <package id="Microsoft.AspNet.WebApi.Client" version="5.2.3" targetFramework="net45" />
   <package id="Microsoft.AspNet.WebApi.Core" version="5.2.3" targetFramework="net45" />
   <package id="Microsoft.AspNet.WebApi.Owin" version="5.2.3" 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.Hosting" version="3.0.1" targetFramework="net45" />
   <package id="Newtonsoft.Json" version="7.0.1" targetFramework="net45" />
   <package id="Owin" version="1.0" targetFramework="net45" />