diff --git a/GrpsServiceApp.ClientLib/GrpsServiceApp.ClientLib.csproj b/GrpsServiceApp.ClientLib/GrpsServiceApp.ClientLib.csproj
index 31b87da..3b4b4c0 100644
--- a/GrpsServiceApp.ClientLib/GrpsServiceApp.ClientLib.csproj
+++ b/GrpsServiceApp.ClientLib/GrpsServiceApp.ClientLib.csproj
@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.9.1" />
+    <PackageReference Include="Google.Protobuf" Version="3.15.0" />
     <PackageReference Include="Grpc.Net.Client" Version="0.2.23-pre1" />
     <PackageReference Include="Grpc.Tools" Version="2.23.0">
       <PrivateAssets>all</PrivateAssets>