diff --git a/src/plesklibTest/packages.config b/src/plesklibTest/packages.config
index 9ae1281..455d64c 100644
--- a/src/plesklibTest/packages.config
+++ b/src/plesklibTest/packages.config
@@ -2,7 +2,7 @@
 <packages>
   <package id="FluentAssertions" version="4.0.0" targetFramework="net45" />
   <package id="JustFakeIt" version="1.0.0.49" 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.Diagnostics" version="3.0.1" targetFramework="net45" />
   <package id="Microsoft.Owin.Host.HttpListener" version="3.0.1" targetFramework="net45" />
   <package id="Microsoft.Owin.Hosting" version="3.0.1" targetFramework="net45" />