diff --git a/root/programs/ASPNETWebService/ASPNETWebService/packages.config b/root/programs/ASPNETWebService/ASPNETWebService/packages.config
index bd14400..9b8692c 100644
--- a/root/programs/ASPNETWebService/ASPNETWebService/packages.config
+++ b/root/programs/ASPNETWebService/ASPNETWebService/packages.config
@@ -24,7 +24,7 @@
   <package id="Microsoft.AspNet.WebPages.ja" version="3.2.6" targetFramework="net48" />
   <package id="Microsoft.CodeDom.Providers.DotNetCompilerPlatform" version="2.0.1" targetFramework="net48" />
   <package id="Microsoft.Net.Compilers" version="2.10.0" targetFramework="net48" developmentDependency="true" />
-  <package id="Microsoft.Owin" version="4.0.0" targetFramework="net48" />
+  <package id="Microsoft.Owin" version="4.1.1" targetFramework="net48" />
   <package id="Microsoft.Owin.Host.SystemWeb" version="4.0.0" targetFramework="net48" />
   <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net48" />
   <package id="Newtonsoft.Json" version="12.0.2" targetFramework="net48" />