diff --git a/MySiyouku/packages.config b/MySiyouku/packages.config
index 30c22fa..8be511b 100644
--- a/MySiyouku/packages.config
+++ b/MySiyouku/packages.config
@@ -32,7 +32,7 @@
   <package id="Microsoft.AspNet.WebPages.zh-Hans" version="3.2.3" targetFramework="net461" />
   <package id="Microsoft.jQuery.Unobtrusive.Ajax" version="3.2.3" targetFramework="net452" />
   <package id="Microsoft.Net.Compilers" version="1.0.0" targetFramework="net461" developmentDependency="true" />
-  <package id="Microsoft.Owin" version="3.0.1" targetFramework="net452" />
+  <package id="Microsoft.Owin" version="4.0.0" targetFramework="net452" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="3.0.1" targetFramework="net452" />
   <package id="Microsoft.Owin.Host.SystemWeb.zh-Hans" version="3.0.1" targetFramework="net452" />
   <package id="Microsoft.Owin.Security" version="3.0.1" targetFramework="net452" />