diff --git a/lightrag/storage/json_kv_storage.py b/lightrag/storage/json_kv_storage.py
index ddb1a863..57fe765d 100644
--- a/lightrag/storage/json_kv_storage.py
+++ b/lightrag/storage/json_kv_storage.py
@@ -50,29 +50,17 @@ Usage:
 
 
 import asyncio
-import html
 import os
-from tqdm.asyncio import tqdm as tqdm_async
 from dataclasses import dataclass
-from typing import Any, Union, cast, Dict
-import numpy as np
-
-import time
 
 from lightrag.utils import (
     logger,
     load_json,
     write_json,
-    compute_mdhash_id,
 )
 
 from lightrag.base import (
-    BaseGraphStorage,
     BaseKVStorage,
-    BaseVectorStorage,
-    DocStatus,
-    DocProcessingStatus,
-    DocStatusStorage,
 )