diff --git a/conanfile.py b/conanfile.py
index 577d3cf..e616576 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -10,7 +10,7 @@
 
 class NuRaftMesgConan(ConanFile):
     name = "nuraft_mesg"
-    version = "3.6.4"
+    version = "3.7.0"
 
     homepage = "https://github.com/eBay/nuraft_mesg"
     description = "A gRPC service for NuRAFT"
diff --git a/src/proto/proto_mesg_factory.cpp b/src/proto/proto_mesg_factory.cpp
index 7fad1fb..1ba2116 100644
--- a/src/proto/proto_mesg_factory.cpp
+++ b/src/proto/proto_mesg_factory.cpp
@@ -338,6 +338,7 @@ inline std::shared_ptr< nuraft::resp_msg > toResponse(RaftMessage const& raft_ms
     auto const& resp = raft_msg.rc_response();
     auto message = std::make_shared< grpc_resp >(base.term(), (nuraft::msg_type)base.type(), base.src(), base.dest(),
                                                  resp.next_index(), resp.accepted());
+    message->set_next_batch_size_hint_in_bytes(resp.batch_size_hint());
     message->set_result_code((nuraft::cmd_result_code)(0 - resp.result_code()));
     if (nuraft::cmd_result_code::NOT_LEADER == message->get_result_code()) {
         LOGI("Leader has changed!");
diff --git a/src/proto/proto_service.cpp b/src/proto/proto_service.cpp
index 843fe75..86beb6c 100644
--- a/src/proto/proto_service.cpp
+++ b/src/proto/proto_service.cpp
@@ -38,6 +38,7 @@ static RCResponse* fromRCResponse(nuraft::resp_msg& rcmsg) {
     auto req = new RCResponse;
     req->set_next_index(rcmsg.get_next_idx());
     req->set_accepted(rcmsg.get_accepted());
+    req->set_batch_size_hint(rcmsg.get_next_batch_size_hint_in_bytes());
     req->set_result_code((ResultCode)(0 - rcmsg.get_result_code()));
     auto ctx = rcmsg.get_ctx();
     if (ctx) { req->set_context(ctx->data(), ctx->size()); }
diff --git a/src/proto/raft_types.proto b/src/proto/raft_types.proto
index b6c6231..7779bb9 100644
--- a/src/proto/raft_types.proto
+++ b/src/proto/raft_types.proto
@@ -73,6 +73,7 @@ message RCResponse {
     bytes context = 3;
     string dest_addr = 4;
     ResultCode result_code = 5;
+    uint64 batch_size_hint = 6;
 }
 
 message RaftMessage {