diff --git a/apps/emqx_exhook/src/emqx_exhook.appup.src b/apps/emqx_exhook/src/emqx_exhook.appup.src
index e78afef1e..ea8aacb7a 100644
--- a/apps/emqx_exhook/src/emqx_exhook.appup.src
+++ b/apps/emqx_exhook/src/emqx_exhook.appup.src
@@ -2,14 +2,20 @@
 {VSN,
  [{"4.3.4",
    [{load_module,emqx_exhook_pb,brutal_purge,soft_purge,[]},
-    {load_module,emqx_exhook_handler,brutal_purge,soft_purge,[emqx_exhook_pb]}]},
+    {load_module,emqx_exhook_handler,brutal_purge,soft_purge,[emqx_exhook_pb]},
+    {load_module,emqx_exhook_mngr,brutal_purge,soft_purge,[]},
+    {load_module,emqx_exhook_server,brutal_purge,soft_purge,[]},
+    {load_module,emqx_exhook_sup,brutal_purge,soft_purge,[]}]},
   {<<"4\\.3\\.[0-3]+">>,
    [{restart_application,emqx_exhook}]},
   {<<".*">>, []}
  ],
  [{"4.3.4",
    [{load_module,emqx_exhook_pb,brutal_purge,soft_purge,[]},
-    {load_module,emqx_exhook_handler,brutal_purge,soft_purge,[emqx_exhook_pb]}]},
+    {load_module,emqx_exhook_handler,brutal_purge,soft_purge,[emqx_exhook_pb]},
+    {load_module,emqx_exhook_mngr,brutal_purge,soft_purge,[]},
+    {load_module,emqx_exhook_server,brutal_purge,soft_purge,[]},
+    {load_module,emqx_exhook_sup,brutal_purge,soft_purge,[]}]},
   {<<"4\\.3\\.[0-3]+">>,
    [{restart_application,emqx_exhook}]},
   {<<".*">>, []}
diff --git a/apps/emqx_exhook/test/emqx_exhook_demo_svr.erl b/apps/emqx_exhook/test/emqx_exhook_demo_svr.erl
index 6e9691c3e..1d3896e14 100644
--- a/apps/emqx_exhook/test/emqx_exhook_demo_svr.erl
+++ b/apps/emqx_exhook/test/emqx_exhook_demo_svr.erl
@@ -295,7 +295,7 @@ on_session_terminated(Req, Md) ->
      | {error, grpc_cowboy_h:error_response()}.
 on_message_publish(#{message := #{from := From} = Msg} = Req, Md) ->
     ?MODULE:in({?FUNCTION_NAME, Req}),
-    io:format(standard_error, "fun: ~p, req: ~0p~n", [?FUNCTION_NAME, Req]),
+    %io:format(standard_error, "fun: ~p, req: ~0p~n", [?FUNCTION_NAME, Req]),
     %% some cases for testing
     case From of
         <<"baduser">> ->