diff --git a/CustomCAProvider/CustomCAProvider/packages.config b/CustomCAProvider/CustomCAProvider/packages.config
index 5690598..74c26df 100644
--- a/CustomCAProvider/CustomCAProvider/packages.config
+++ b/CustomCAProvider/CustomCAProvider/packages.config
@@ -25,7 +25,7 @@
   <package id="Microsoft.IdentityModel.Protocols.OpenIdConnect" version="5.2.0-preview1-408290725" targetFramework="net452" />
   <package id="Microsoft.IdentityModel.Tokens" version="5.2.0-preview1-408290725" targetFramework="net452" />
   <package id="Microsoft.Net.Compilers" version="1.3.2" targetFramework="net452" developmentDependency="true" />
-  <package id="Microsoft.Owin" version="3.1.0" targetFramework="net452" />
+  <package id="Microsoft.Owin" version="4.0.0" targetFramework="net452" />
   <package id="Microsoft.Owin.Security" version="3.1.0" targetFramework="net452" />
   <package id="Microsoft.Owin.Security.Jwt" version="3.1.0" targetFramework="net452" />
   <package id="Microsoft.Owin.Security.OAuth" version="3.1.0" targetFramework="net452" />