diff --git a/apps/emqx_bridge_mongodb/test/emqx_bridge_mongodb_SUITE.erl b/apps/emqx_bridge_mongodb/test/emqx_bridge_mongodb_SUITE.erl
index 5077cd174..89243bf8e 100644
--- a/apps/emqx_bridge_mongodb/test/emqx_bridge_mongodb_SUITE.erl
+++ b/apps/emqx_bridge_mongodb/test/emqx_bridge_mongodb_SUITE.erl
@@ -141,7 +141,9 @@ start_apps() ->
     %% we want to make sure they are loaded before
     %% ekka start in emqx_common_test_helpers:start_apps/1
     emqx_common_test_helpers:render_and_load_app_config(emqx_conf),
-    ok = emqx_common_test_helpers:start_apps([emqx_conf, emqx_rule_engine, emqx_bridge]).
+    ok = emqx_common_test_helpers:start_apps([
+        emqx_conf, emqx_rule_engine, emqx_bridge, emqx_mongodb
+    ]).
 
 ensure_loaded() ->
     _ = application:load(emqx_ee_bridge),
diff --git a/apps/emqx_mongodb/test/emqx_mongodb_SUITE.erl b/apps/emqx_mongodb/test/emqx_mongodb_SUITE.erl
index 3ee876934..38cd83d47 100644
--- a/apps/emqx_mongodb/test/emqx_mongodb_SUITE.erl
+++ b/apps/emqx_mongodb/test/emqx_mongodb_SUITE.erl
@@ -38,6 +38,7 @@ init_per_suite(Config) ->
             ok = emqx_common_test_helpers:start_apps([emqx_conf]),
             ok = emqx_connector_test_helpers:start_apps([emqx_resource]),
             {ok, _} = application:ensure_all_started(emqx_connector),
+            {ok, _} = application:ensure_all_started(emqx_mongodb),
             Config;
         false ->
             {skip, no_mongo}