diff --git a/lightrag/kg/mongo_impl.py b/lightrag/kg/mongo_impl.py
index 1c9ce50e..66331520 100644
--- a/lightrag/kg/mongo_impl.py
+++ b/lightrag/kg/mongo_impl.py
@@ -2,14 +2,11 @@ import os
 from tqdm.asyncio import tqdm as tqdm_async
 from dataclasses import dataclass
 import pipmaster as pm
-import numpy as np
+import np
 
 if not pm.is_installed("pymongo"):
     pm.install("pymongo")
 
-if not pm.is_installed("motor"):
-    pm.install("motor")
-
 from pymongo import MongoClient
 from motor.motor_asyncio import AsyncIOMotorClient
 from typing import Union, List, Tuple