diff --git a/test/Unit/packages.config b/test/Unit/packages.config
index 340ee309..21fd28fa 100644
--- a/test/Unit/packages.config
+++ b/test/Unit/packages.config
@@ -9,7 +9,7 @@
   <package id="Microsoft.AspNet.Mvc" version="5.2.3" targetFramework="net45" />
   <package id="Microsoft.AspNet.Razor" version="3.2.3" targetFramework="net45" />
   <package id="Microsoft.AspNet.WebPages" version="3.2.3" 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.Web.Infrastructure" version="1.0.0.0" targetFramework="net45" />
   <package id="Moq" version="4.2.1507.0118" targetFramework="net45" />
   <package id="NMemory" version="1.1.0" targetFramework="net45" />