diff --git a/src/greptimedb_stream.erl b/src/greptimedb_stream.erl
index 19fa7ec..3a06990 100644
--- a/src/greptimedb_stream.erl
+++ b/src/greptimedb_stream.erl
@@ -43,12 +43,12 @@ write_request(Stream, Request) ->
     end.
 
 %% @doc Finish the gRPC stream and wait the result.
--spec finish(Stream :: map()) -> {ok, term()} | {error, term()}.
+-spec finish(Stream :: map()) -> {ok, term()} | {error, term(), term()} | timeout | stream_finished.
 finish(Stream) ->
     finish(Stream, 10_000).
 
 %% @doc Finish the gRPC stream and wait the result with timeout in milliseconds.
--spec finish(Stream :: map(), Timeout :: integer()) -> {ok, term()} | {error, term()}.
+-spec finish(Stream :: map(), Timeout :: integer()) -> {ok, term()} | {error, term(), term()} | timeout | stream_finished.
 finish(Stream, Timeout) ->
     try
         ok = grpcbox_client:close_send(Stream),
diff --git a/src/greptimedb_worker.erl b/src/greptimedb_worker.erl
index faecf98..1f49856 100644
--- a/src/greptimedb_worker.erl
+++ b/src/greptimedb_worker.erl
@@ -203,7 +203,15 @@ shoot(Stream, ?REQ(Req, _), #state{requests = #{pending_count := 0}} = State, Re
     %% Write the last request and finish stream
     case greptimedb_stream:write_request(Stream, Req) of
         ok ->
-            Result =  greptimedb_stream:finish(Stream),
+            Result =  case greptimedb_stream:finish(Stream) of
+                          {ok, Resp} ->
+                              {ok, Resp};
+                          {error, {?GRPC_STATUS_UNAUTHENTICATED, Msg}, Other} ->
+                              {error, {unauth, Msg, Other}};
+                          Err ->
+                              {error, Err}
+                      end,
+
             lists:foreach(fun(ReplyTo) ->
                                   reply(ReplyTo, Result)
                           end, ReplyToList);
diff --git a/test/greptimedb_SUITE.erl b/test/greptimedb_SUITE.erl
index 331ec27..0b209ba 100644
--- a/test/greptimedb_SUITE.erl
+++ b/test/greptimedb_SUITE.erl
@@ -163,7 +163,22 @@ t_auth_error(_) ->
          {pool_type, random},
          {auth, {basic, #{username => <<"greptime_user">>, password => <<"wrong_pwd">>}}}],
     {ok, Client} = greptimedb:start_client(Options),
+
+    %% sync write
     {error, {unauth, _, _}} = greptimedb:write(Client, Metric, Points),
+    %% async write
+    Ref = make_ref(),
+    TestPid = self(),
+    ResultCallback = {fun(Reply) -> TestPid ! {{Ref, reply}, Reply} end, []},
+
+    ok = greptimedb:async_write(Client, Metric, Points, ResultCallback),
+    receive
+        {{Ref, reply}, {error, {unauth, _, _}}} ->
+            ok;
+        {{Ref, reply}, _Other} ->
+            ?assert(false)
+    end,
+
     greptimedb:stop_client(Client),
     ok.