diff --git a/WebBlocks/WebBlocks.SandboxV7/packages.config b/WebBlocks/WebBlocks.SandboxV7/packages.config
index 5e23ba47..9210775e 100644
--- a/WebBlocks/WebBlocks.SandboxV7/packages.config
+++ b/WebBlocks/WebBlocks.SandboxV7/packages.config
@@ -28,7 +28,7 @@
   <package id="Microsoft.Bcl" version="1.1.10" targetFramework="net45" />
   <package id="Microsoft.Bcl.Build" version="1.0.14" targetFramework="net45" />
   <package id="Microsoft.Net.Http" version="2.2.29" 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.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" />