diff --git a/setup.py b/setup.py
index c843d422..844cabd5 100644
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,7 @@ setup(
   install_requires=[
         'transformers',
         'openai',
-        'langchain',
+        'langchain==0.0.240',
         'torch',
         'torchvision',
         'torchaudio',