diff --git a/GRPCDemoApp/GRPCDemoApp/GRPCDemoApp.Client/GRPCDemoApp.Client.csproj b/GRPCDemoApp/GRPCDemoApp/GRPCDemoApp.Client/GRPCDemoApp.Client.csproj
index a28857b..5a38695 100644
--- a/GRPCDemoApp/GRPCDemoApp/GRPCDemoApp.Client/GRPCDemoApp.Client.csproj
+++ b/GRPCDemoApp/GRPCDemoApp/GRPCDemoApp.Client/GRPCDemoApp.Client.csproj
@@ -13,7 +13,7 @@
 
   <ItemGroup>
     <PackageReference Include="Grpc.Core" Version="1.19.0-pre1" />
-    <PackageReference Include="Google.Protobuf" Version="3.6.1" />
+    <PackageReference Include="Google.Protobuf" Version="3.15.0" />
 
     <PackageReference Include="Grpc.Tools" Version="1.19.0-pre1" PrivateAssets="All" />
   </ItemGroup>