diff --git a/mqtt/verne/src/mfx_grpc.erl b/mqtt/verne/src/mfx_grpc.erl
index 8e1ea1a0..576fb659 100644
--- a/mqtt/verne/src/mfx_grpc.erl
+++ b/mqtt/verne/src/mfx_grpc.erl
@@ -88,6 +88,7 @@ handle_cast(_Request, State) ->
 handle_info(_Info, State) ->
     {noreply, State}.
 
-terminate(_Reason, _State) ->
-    [].
+terminate(Reason, #state{conn = GrpcConn} = State) ->
+    grpc_client:stop(GrpcConn),
+    {stop, Reason, State}.
 
diff --git a/mqtt/verne/src/mfx_nats.erl b/mqtt/verne/src/mfx_nats.erl
index 5248b564..0428d81a 100644
--- a/mqtt/verne/src/mfx_nats.erl
+++ b/mqtt/verne/src/mfx_nats.erl
@@ -49,8 +49,9 @@ handle_cast({publish, Subject, Message}, #state{conn = NatsConn} = State) ->
 handle_info(_Info, State) ->
     {noreply, State}.
 
-terminate(_Reason, _State) ->
-    [].
+terminate(Reason, #state{conn = NatsConn} = State) ->
+    nats:disconnect(NatsConn),
+    {stop, Reason, State}.
 
 subscribe(NatsConn) ->
     Subject = <<"channel.>">>,
diff --git a/mqtt/verne/src/mfx_redis.erl b/mqtt/verne/src/mfx_redis.erl
index 74bbcb60..129a7b51 100644
--- a/mqtt/verne/src/mfx_redis.erl
+++ b/mqtt/verne/src/mfx_redis.erl
@@ -42,5 +42,6 @@ handle_cast({publish, Message}, #state{conn = RedisConn} = State) ->
 handle_info(_Info, State) ->
     {noreply, State}.
 
-terminate(_Reason, _State) ->
-    [].
+terminate(Reason, #state{conn = RedisConn} = State) ->
+    eredis:stop(RedisConn),
+    {stop, Reason, State}.