https://github.com/celery/celery/commit/fb48b1f357f7a416d1413d0056158a74191185af.diff
diff --git a/celery/tests/backends/test_mongodb.py b/celery/tests/backends/test_mongodb.py
index f7546d3..a32d9ed 100644
--- a/celery/tests/backends/test_mongodb.py
+++ b/celery/tests/backends/test_mongodb.py
@@ -253,8 +253,8 @@ def test_restore_group(self, mock_get_database):
         mock_collection.find_one.assert_called_once_with(
             {'_id': sentinel.taskset_id})
         self.assertItemsEqual(
-            ['date_done', 'result', 'task_id'],
-            list(ret_val.keys()),
+            list(sorted(['date_done', 'result', 'task_id'])),
+            list(sorted(ret_val.keys())),
         )
 
     @patch('celery.backends.mongodb.MongoBackend._get_database')