diff --git a/test/BlazorFly.Grpc.Tests/BlazorFly.Grpc.Tests.csproj b/test/BlazorFly.Grpc.Tests/BlazorFly.Grpc.Tests.csproj
index 9a18cd3..a2e25bc 100644
--- a/test/BlazorFly.Grpc.Tests/BlazorFly.Grpc.Tests.csproj
+++ b/test/BlazorFly.Grpc.Tests/BlazorFly.Grpc.Tests.csproj
@@ -23,7 +23,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Google.Protobuf" Version="3.11.2" />
+    <PackageReference Include="Google.Protobuf" Version="3.15.0" />
     <PackageReference Include="Grpc.Core.Api" Version="2.26.0" />
     <PackageReference Include="Grpc.Tools" Version="2.26.0">
       <PrivateAssets>all</PrivateAssets>