diff --git a/src/TopSwagCode.GRPC.Client.Secure/TopSwagCode.GRPC.Client.Secure.csproj b/src/TopSwagCode.GRPC.Client.Secure/TopSwagCode.GRPC.Client.Secure.csproj
index c6f72b7..584b3e0 100644
--- a/src/TopSwagCode.GRPC.Client.Secure/TopSwagCode.GRPC.Client.Secure.csproj
+++ b/src/TopSwagCode.GRPC.Client.Secure/TopSwagCode.GRPC.Client.Secure.csproj
@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.12.1" />
+    <PackageReference Include="Google.Protobuf" Version="3.15.0" />
     <PackageReference Include="Grpc.Net.Client" Version="2.28.0" />
     <PackageReference Include="Grpc.Tools" Version="2.29.0">
       <PrivateAssets>all</PrivateAssets>