diff --git a/src/Our.Umbraco.IoC.WebTest/packages.config b/src/Our.Umbraco.IoC.WebTest/packages.config
index c9e62b8..aacdca7 100644
--- a/src/Our.Umbraco.IoC.WebTest/packages.config
+++ b/src/Our.Umbraco.IoC.WebTest/packages.config
@@ -28,7 +28,7 @@
   <package id="Microsoft.CodeDom.Providers.DotNetCompilerPlatform" version="1.0.7" targetFramework="net461" requireReinstallation="true" />
   <package id="Microsoft.IO.RecyclableMemoryStream" version="1.2.2" targetFramework="net45" />
   <package id="Microsoft.Net.Compilers" version="2.1.0" targetFramework="net461" developmentDependency="true" />
-  <package id="Microsoft.Owin" version="3.1.0" targetFramework="net45" />
+  <package id="Microsoft.Owin" version="4.0.0" targetFramework="net45" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="3.1.0" targetFramework="net45" />
   <package id="Microsoft.Owin.Security" version="3.1.0" targetFramework="net45" />
   <package id="Microsoft.Owin.Security.Cookies" version="3.1.0" targetFramework="net45" />