diff --git a/Source/WebHost/packages.config b/Source/WebHost/packages.config
index 693ae3a6..32d4616c 100644
--- a/Source/WebHost/packages.config
+++ b/Source/WebHost/packages.config
@@ -2,7 +2,7 @@
 <packages>
   <package id="EntityFramework" version="6.1.3" targetFramework="net45" />
   <package id="IdentityServer3" version="2.5.0-build00468" 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.Owin.Host.SystemWeb" version="3.0.1" targetFramework="net45" />
   <package id="Owin" version="1.0" targetFramework="net45" />
   <package id="Serilog" version="1.5.14" targetFramework="net45" />