diff --git a/ratis-grpc/src/main/java/org/apache/ratis/grpc/server/GrpcClientProtocolService.java b/ratis-grpc/src/main/java/org/apache/ratis/grpc/server/GrpcClientProtocolService.java
index 9c19684677..9a00a1ec7c 100644
--- a/ratis-grpc/src/main/java/org/apache/ratis/grpc/server/GrpcClientProtocolService.java
+++ b/ratis-grpc/src/main/java/org/apache/ratis/grpc/server/GrpcClientProtocolService.java
@@ -48,8 +48,8 @@
 import java.util.function.Consumer;
 import java.util.function.Supplier;
 
-class GrpcClientProtocolService extends RaftClientProtocolServiceImplBase {
-  private static final Logger LOG = LoggerFactory.getLogger(GrpcClientProtocolService.class);
+public class GrpcClientProtocolService extends RaftClientProtocolServiceImplBase {
+  public static final Logger LOG = LoggerFactory.getLogger(GrpcClientProtocolService.class);
 
   private static class PendingOrderedRequest implements SlidingWindow.ServerSideRequest<RaftClientReply> {
     private final RaftClientRequest request;