diff --git a/BioMatcher.Server/packages.config b/BioMatcher.Server/packages.config
index 324139d..dcc9d3b 100644
--- a/BioMatcher.Server/packages.config
+++ b/BioMatcher.Server/packages.config
@@ -3,7 +3,7 @@
   <package id="Microsoft.AspNet.Cors" version="5.2.3" targetFramework="net452" />
   <package id="Microsoft.AspNet.SignalR.Core" version="2.2.0" targetFramework="net452" />
   <package id="Microsoft.AspNet.SignalR.SelfHost" version="2.2.0" targetFramework="net452" />
-  <package id="Microsoft.Owin" version="3.0.1" targetFramework="net452" />
+  <package id="Microsoft.Owin" version="4.1.1" targetFramework="net452" />
   <package id="Microsoft.Owin.Cors" version="3.0.1" targetFramework="net452" />
   <package id="Microsoft.Owin.Diagnostics" version="3.0.1" targetFramework="net452" />
   <package id="Microsoft.Owin.Host.HttpListener" version="3.0.1" targetFramework="net452" />