diff --git a/loader.py b/loader.py
index 471f44e..75e66bc 100644
--- a/loader.py
+++ b/loader.py
@@ -4,7 +4,6 @@ from langchain.docstore.document import Document
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 
 
-
 class TextLoader(PyOperator):
     '''Load data from urls or files (paths or file-like objects) as a list of doc chunks'''
     def __init__(self,
diff --git a/requirements.txt b/requirements.txt
index 98cef79..ded1321 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1 @@
-langchain
+langchain>=0.0.151