diff --git a/rag/utils/opensearch_conn.py b/rag/utils/opensearch_conn.py
index 2e730829b..269948f80 100644
--- a/rag/utils/opensearch_conn.py
+++ b/rag/utils/opensearch_conn.py
@@ -91,7 +91,7 @@ class OSConnection(DocStoreConnection):
     Table operations
     """
 
-    def create_idx(self, indexName: str, knowledgebaseId: str, vectorSize: int):
+    def create_idx(self, indexName: str, knowledgebaseId: str, vectorSize: int, parser_id: str = None):
         if self.index_exist(indexName, knowledgebaseId):
             return True
         try: