diff --git a/tests/protobuf-net.Grpc.Test/protobuf-net.Grpc.Test.csproj b/tests/protobuf-net.Grpc.Test/protobuf-net.Grpc.Test.csproj
index 4aa01dec..f1bd79f2 100644
--- a/tests/protobuf-net.Grpc.Test/protobuf-net.Grpc.Test.csproj
+++ b/tests/protobuf-net.Grpc.Test/protobuf-net.Grpc.Test.csproj
@@ -20,6 +20,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <ProjectReference Include="..\..\src\protobuf-net.Grpc\protobuf-net.Grpc.csproj" />
+    <PackageReference Include="Grpc.Core.Api" Version="$(GrpcVersion)" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' != 'net461' and '$(TargetFramework)' != 'net472'">