diff --git a/Blog/packages.config b/Blog/packages.config
index c105ad9..d20e583 100644
--- a/Blog/packages.config
+++ b/Blog/packages.config
@@ -51,7 +51,7 @@
   <package id="Microsoft.Extensions.Primitives" version="2.1.1" targetFramework="net461" />
   <package id="Microsoft.jQuery.Unobtrusive.Validation" version="3.2.3" targetFramework="net461" />
   <package id="Microsoft.Net.Compilers" version="1.0.0" targetFramework="net461" developmentDependency="true" />
-  <package id="Microsoft.Owin" version="3.0.1" targetFramework="net461" />
+  <package id="Microsoft.Owin" version="4.0.0" targetFramework="net461" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="3.0.1" targetFramework="net461" />
   <package id="Microsoft.Owin.Host.SystemWeb.ru" version="3.0.1" targetFramework="net461" />
   <package id="Microsoft.Owin.ru" version="3.0.1" targetFramework="net461" />