diff --git a/FreesideKeyService/packages.config b/FreesideKeyService/packages.config
index 652e241..926634a 100644
--- a/FreesideKeyService/packages.config
+++ b/FreesideKeyService/packages.config
@@ -5,7 +5,7 @@
   <package id="Microsoft.AspNet.WebApi.Core" version="5.2.7" targetFramework="net472" />
   <package id="Microsoft.AspNet.WebApi.Owin" version="5.2.7" targetFramework="net472" />
   <package id="Microsoft.AspNet.WebApi.OwinSelfHost" version="5.2.7" targetFramework="net472" />
-  <package id="Microsoft.Owin" version="4.0.1" targetFramework="net472" />
+  <package id="Microsoft.Owin" version="4.1.1" targetFramework="net472" />
   <package id="Microsoft.Owin.Cors" version="4.0.1" targetFramework="net472" />
   <package id="Microsoft.Owin.Diagnostics" version="4.0.1" targetFramework="net472" />
   <package id="Microsoft.Owin.Host.HttpListener" version="4.0.1" targetFramework="net472" />