diff --git a/lightrag/kg/json_kv_impl.py b/lightrag/kg/json_kv_impl.py
index cfd67367..0bda6d42 100644
--- a/lightrag/kg/json_kv_impl.py
+++ b/lightrag/kg/json_kv_impl.py
@@ -47,3 +47,8 @@ class JsonKVStorage(BaseKVStorage):
 
     async def drop(self) -> None:
         self._data = {}
+    
+    async def delete(self, ids: list[str]) -> None:
+        for doc_id in ids:
+            self._data.pop(doc_id, None)
+        await self.index_done_callback()