diff --git a/grpcClientForCustomers/grpcClientForCustomers.csproj b/grpcClientForCustomers/grpcClientForCustomers.csproj
index 89e0a88..24ea187 100644
--- a/grpcClientForCustomers/grpcClientForCustomers.csproj
+++ b/grpcClientForCustomers/grpcClientForCustomers.csproj
@@ -10,7 +10,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.11.2" />
+    <PackageReference Include="Google.Protobuf" Version="3.15.0" />
     <PackageReference Include="Grpc.Net.Client" Version="2.25.0" />
     <PackageReference Include="Grpc.Tools" Version="2.25.0">
       <PrivateAssets>all</PrivateAssets>