diff --git a/GrpcClient/GrpcClient.csproj b/GrpcClient/GrpcClient.csproj
index 6eacbb6..1640bcd 100644
--- a/GrpcClient/GrpcClient.csproj
+++ b/GrpcClient/GrpcClient.csproj
@@ -10,7 +10,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.10.1" />
+    <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>