diff --git a/FreeSql.Tools.DSkin/packages.config b/FreeSql.Tools.DSkin/packages.config
index 79df32e..71a54d9 100644
--- a/FreeSql.Tools.DSkin/packages.config
+++ b/FreeSql.Tools.DSkin/packages.config
@@ -9,7 +9,7 @@
   <package id="FreeSql.Provider.Sqlite" version="1.3.2" targetFramework="net452" />
   <package id="FreeSql.Provider.SqlServer" version="1.3.2" targetFramework="net452" />
   <package id="FreeSql.Repository" version="1.3.2" targetFramework="net452" />
-  <package id="Google.Protobuf" version="3.9.2" targetFramework="net452" />
+  <package id="Google.Protobuf" version="3.15.0" targetFramework="net452" />
   <package id="Microsoft.AspNet.Razor" version="3.2.7" targetFramework="net452" />
   <package id="MySql.Data" version="8.0.19" targetFramework="net452" />
   <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net452" />