diff --git a/apps/emqx_management/src/emqx_management.appup.src b/apps/emqx_management/src/emqx_management.appup.src
index 1463334b4..17260b107 100644
--- a/apps/emqx_management/src/emqx_management.appup.src
+++ b/apps/emqx_management/src/emqx_management.appup.src
@@ -1,7 +1,10 @@
 %% -*- mode: erlang -*-
 {VSN,
  [ {<<"4\\.3\\.[0-9]+">>,
-    [ {apply,{minirest,stop_http,['http:management']}},
+    [ %% Stop the http listener to load the latest http handlers.
+      %% We can only stop these listeners here because we can't get the list of
+      %% currently started http listener via app-env during the hot upgrade.
+      {apply,{minirest,stop_http,['http:management']}},
       {apply,{minirest,stop_http,['https:management']}},
       {restart_application, emqx_management}
     ]},
diff --git a/apps/emqx_management/src/emqx_mgmt_http.erl b/apps/emqx_management/src/emqx_mgmt_http.erl
index 473cec306..5ccc2cf5e 100644
--- a/apps/emqx_management/src/emqx_mgmt_http.erl
+++ b/apps/emqx_management/src/emqx_mgmt_http.erl
@@ -85,6 +85,8 @@ listeners() ->
     application:get_env(?APP, listeners, []).
 
 listener_name(Proto) ->
+    %% NOTE: this name has referenced by emqx_management.appup.src.
+    %% Please don't change it except you have got how to handle it in hot-upgrade
     list_to_atom(atom_to_list(Proto) ++ ":management").
 
 http_handlers() ->
diff --git a/lib-ce/emqx_dashboard/src/emqx_dashboard.appup.src b/lib-ce/emqx_dashboard/src/emqx_dashboard.appup.src
index 902585ffb..cefe79ebd 100644
--- a/lib-ce/emqx_dashboard/src/emqx_dashboard.appup.src
+++ b/lib-ce/emqx_dashboard/src/emqx_dashboard.appup.src
@@ -5,12 +5,19 @@
     %% NOTE: this depends on the fact that emqx_dashboard is always
     %% the last application gets upgraded
     [ {apply, {emqx_rule_engine, load_providers, []}}
+      %% Stop the http listener to load the latest http handlers.
+      %% We can only stop these listeners here because we can't get the list of
+      %% currently started http listener via app-env during the hot upgrade.
+    , {apply, {minirest, stop_http, ['http:dashboard']}}
+    , {apply, {minirest, stop_http, ['https:dashboard']}}
     , {restart_application, emqx_dashboard}
     , {apply, {emqx_plugins, load, []}}
     ]}
  ],
  [ {<<".*">>,
     [ {apply, {emqx_rule_engine, load_providers, []}}
+    , {apply, {minirest, stop_http, ['http:dashboard']}}
+    , {apply, {minirest, stop_http, ['https:dashboard']}}
     , {restart_application, emqx_dashboard}
     , {apply, {emqx_plugins, load, []}}
     ]}
diff --git a/lib-ce/emqx_dashboard/src/emqx_dashboard.erl b/lib-ce/emqx_dashboard/src/emqx_dashboard.erl
index 5d17c019e..c4a774072 100644
--- a/lib-ce/emqx_dashboard/src/emqx_dashboard.erl
+++ b/lib-ce/emqx_dashboard/src/emqx_dashboard.erl
@@ -80,6 +80,8 @@ listeners() ->
     application:get_env(?APP, listeners, []).
 
 listener_name(Proto) ->
+    %% NOTE: this name has referenced by emqx_dashboard.appup.src.
+    %% Please don't change it except you have got how to handle it in hot-upgrade
     list_to_atom(atom_to_list(Proto) ++ ":dashboard").
 
 %%--------------------------------------------------------------------