diff --git a/libs/langchain/langchain/llms/symblai_nebula.py b/libs/langchain/langchain/llms/symblai_nebula.py
index e52d53dc71..cbc8284169 100644
--- a/libs/langchain/langchain/llms/symblai_nebula.py
+++ b/libs/langchain/langchain/llms/symblai_nebula.py
@@ -3,7 +3,7 @@ import logging
 from typing import Any, Callable, Dict, List, Mapping, Optional
 
 import requests
-from pydantic import Extra, root_validator
+from pydantic_v1 import Extra, root_validator
 from requests import ConnectTimeout, ReadTimeout, RequestException
 from tenacity import (
     before_sleep_log,