diff --git a/apps/emqx_rule_engine/src/emqx_rule_engine.erl b/apps/emqx_rule_engine/src/emqx_rule_engine.erl
index 8d4ccb2f6..052e5391a 100644
--- a/apps/emqx_rule_engine/src/emqx_rule_engine.erl
+++ b/apps/emqx_rule_engine/src/emqx_rule_engine.erl
@@ -40,6 +40,7 @@
         , get_resource_params/1
         , delete_resource/1
         , ensure_resource_deleted/1
+        , update_resource/1
         ]).
 
 -export([ init_resource/4
@@ -309,6 +310,18 @@ delete_resource(ResId) ->
             {error, {resource_not_found, ResId}}
     end.
 
+update_resource(#{id := Id,
+                  config := Config,
+                  type := Type,
+                  description := Description,
+                  created_at := CreatedAt} = NewResource) ->
+    ok = refresh_resource(#resource{id = Id,
+                                    config = Config,
+                                    type = Type,
+                                    description = Description,
+                                    created_at = CreatedAt}),
+    create_resource(NewResource).
+
 %% @doc Ensure resource deleted. `resource_not_found` error is discarded.
 -spec(ensure_resource_deleted(resource_id()) -> ok).
 ensure_resource_deleted(ResId) ->
diff --git a/apps/emqx_rule_engine/src/emqx_rule_engine_api.erl b/apps/emqx_rule_engine/src/emqx_rule_engine_api.erl
index 90db7217c..f073a54df 100644
--- a/apps/emqx_rule_engine/src/emqx_rule_engine_api.erl
+++ b/apps/emqx_rule_engine/src/emqx_rule_engine_api.erl
@@ -86,6 +86,13 @@
             descr  => "Create a resource"
            }).
 
+-rest_api(#{name   => update_resource,
+            method => 'PUT',
+            path   => "/resources/:bin:id",
+            func   => update_resource,
+            descr  => "Update a resource"
+           }).
+
 -rest_api(#{name   => show_resource,
             method => 'GET',
             path   => "/resources/:bin:id",
@@ -159,6 +166,7 @@
         , get_resource_status/2
         , start_resource/2
         , delete_resource/2
+        , update_resource/2
         ]).
 
 -export([ list_resource_types/2
@@ -264,6 +272,7 @@ do_create_resource(Create, Params) ->
             return({error, 400, ?ERR_BADARGS(Reason)})
     end.
 
+
 list_resources(#{}, _Params) ->
     Data0 = lists:foldr(fun maybe_record_to_map/2, [], emqx_rule_registry:get_resources()),
     Data = lists:map(fun(Res = #{id := Id}) ->
@@ -312,6 +321,21 @@ start_resource(#{id := Id}, _Params) ->
             return({error, 400, ?ERR_BADARGS(Reason)})
     end.
 
+update_resource(#{id := Id}, Params) ->
+    case emqx_rule_registry:find_resource(Id) of
+        {ok, #resource{id = Id, type = Type} = _OldResource} ->
+               Config = maps:get(config, parse_resource_params(Params)),
+               Description = maps:get(description, parse_resource_params(Params)),
+               emqx_rule_engine:update_resource(#{id => Id,
+                                                  config => Config,
+                                                  type => Type,
+                                                  description => Description,
+                                                  created_at => erlang:system_time(millisecond)}),
+               return(ok);
+        _Other ->
+               return({error, 400, ?ERR_NO_RESOURCE(Id)})
+    end.
+
 delete_resource(#{id := Id}, _Params) ->
     ok = emqx_rule_engine:ensure_resource_deleted(Id),
     return(ok).
diff --git a/apps/emqx_rule_engine/test/emqx_rule_engine_SUITE.erl b/apps/emqx_rule_engine/test/emqx_rule_engine_SUITE.erl
index 4e21f36c7..e301603df 100644
--- a/apps/emqx_rule_engine/test/emqx_rule_engine_SUITE.erl
+++ b/apps/emqx_rule_engine/test/emqx_rule_engine_SUITE.erl
@@ -447,8 +447,17 @@ t_crud_resources_api(_Config) ->
     {ok, #{code := 0, data := Resources2}} = emqx_rule_engine_api:show_resource(#{id => ResId},[]),
     ?assertEqual(ResId, maps:get(id, Resources2)),
 
-    ?assertMatch({ok, #{code := 0}}, emqx_rule_engine_api:delete_resource(#{id => ResId},#{})),
+    {ok, #{code := 0}} = emqx_rule_engine_api:update_resource(#{id => ResId},
+                                                              [{<<"id">>, ResId},
+                                                               {<<"type">>, <<"built_in">>},
+                                                               {<<"config">>, [{<<"a">>, 2}]},
+                                                               {<<"description">>, <<"2">>}]),
+    {ok, #{code := 0, data := Resources3}} = emqx_rule_engine_api:show_resource(#{id => ResId},[]),
+    ?assertEqual(ResId, maps:get(id, Resources3)),
+    ?assertEqual(#{<<"a">> => 2}, maps:get(config, Resources3)),
+    ?assertEqual(<<"2">>, maps:get(description, Resources3)),
 
+    ?assertMatch({ok, #{code := 0}}, emqx_rule_engine_api:delete_resource(#{id => ResId},#{})),
     ?assertMatch({ok, #{code := 404}}, emqx_rule_engine_api:show_resource(#{id => ResId},[])),
     ok.