diff --git a/hello-grpc-csharp/Common/Common.csproj b/hello-grpc-csharp/Common/Common.csproj
index 017c7e5..4eccf90 100644
--- a/hello-grpc-csharp/Common/Common.csproj
+++ b/hello-grpc-csharp/Common/Common.csproj
@@ -12,7 +12,7 @@
     <!-- https://www.nuget.org/packages/Grpc -->
     <PackageReference Include="Grpc" Version="2.46.6" />
     <!-- https://www.nuget.org/packages/Grpc.Tools -->
-    <PackageReference Include="Grpc.Tools" Version="2.65.0" PrivateAssets="All" />
+    <PackageReference Include="Grpc.Tools" Version="2.66.0" PrivateAssets="All" />
     <!-- https://www.nuget.org/packages/log4net -->
     <PackageReference Include="log4net" Version="2.0.17" />
     <!-- https://www.nuget.org/packages/Newtonsoft.Json -->