diff --git a/OpusCatMTEngine/packages.config b/OpusCatMTEngine/packages.config
index 9d1a558..3bf919d 100644
--- a/OpusCatMTEngine/packages.config
+++ b/OpusCatMTEngine/packages.config
@@ -12,7 +12,7 @@
   <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.Bcl.AsyncInterfaces" version="5.0.0" targetFramework="net472" />
-  <package id="Microsoft.Owin" version="4.1.1" targetFramework="net472" />
+  <package id="Microsoft.Owin" version="4.2.2" targetFramework="net472" />
   <package id="Microsoft.Owin.Host.HttpListener" version="4.1.1" targetFramework="net472" />
   <package id="Microsoft.Owin.Hosting" version="4.1.1" targetFramework="net472" />
   <package id="Microsoft.WindowsAPICodePack-Core" version="1.1.0.0" targetFramework="net472" />