diff --git a/lightrag/lightrag.py b/lightrag/lightrag.py
index 092e06eb..0d072e61 100644
--- a/lightrag/lightrag.py
+++ b/lightrag/lightrag.py
@@ -457,13 +457,13 @@ class LightRAG:
             namespace=NameSpace.VECTOR_STORE_ENTITIES,
             workspace=self.workspace,
             embedding_func=self.embedding_func,
-            meta_fields={"entity_name", "source_id", "content", "file_path"},
+            meta_fields={"entity_name", "source_id", "content", "file_path", "entity_type"},
         )
         self.relationships_vdb: BaseVectorStorage = self.vector_db_storage_cls(  # type: ignore
             namespace=NameSpace.VECTOR_STORE_RELATIONSHIPS,
             workspace=self.workspace,
             embedding_func=self.embedding_func,
-            meta_fields={"src_id", "tgt_id", "source_id", "content", "file_path"},
+            meta_fields={"src_id", "tgt_id", "source_id", "content", "file_path", "weight"},
         )
         self.chunks_vdb: BaseVectorStorage = self.vector_db_storage_cls(  # type: ignore
             namespace=NameSpace.VECTOR_STORE_CHUNKS,
diff --git a/lightrag/operate.py b/lightrag/operate.py
index e3456d92..1eac8357 100644
--- a/lightrag/operate.py
+++ b/lightrag/operate.py
@@ -1284,6 +1284,7 @@ async def merge_nodes_and_edges(
                             "content": f"{edge_data['src_id']}\t{edge_data['tgt_id']}\n{edge_data['keywords']}\n{edge_data['description']}",
                             "source_id": edge_data["source_id"],
                             "file_path": edge_data.get("file_path", "unknown_source"),
+                            "weight": 0
                         }
                     }
                     await relationships_vdb.upsert(data_for_vdb)