diff --git a/gRPC/GrpcClient/GrpcClient.csproj b/gRPC/GrpcClient/GrpcClient.csproj
index 3312181..15412e2 100644
--- a/gRPC/GrpcClient/GrpcClient.csproj
+++ b/gRPC/GrpcClient/GrpcClient.csproj
@@ -11,7 +11,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.10.0" />
+    <PackageReference Include="Google.Protobuf" Version="3.15.0" />
     <PackageReference Include="Grpc.Net.Client" Version="2.24.0" />
     <PackageReference Include="Grpc.Tools" Version="2.24.0">
       <PrivateAssets>all</PrivateAssets>