diff --git a/requirements.txt b/requirements.txt
index 930b92df..186d2774 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 transformers
 openai
-langchain==0.0.240
+langchain==0.0.259
 
 torch
 torchvision
diff --git a/setup.py b/setup.py
index 9993a721..cb037ccf 100644
--- a/setup.py
+++ b/setup.py
@@ -19,7 +19,7 @@ setup(
   install_requires=[
         'transformers',
         'openai',
-        'langchain==0.0.240',
+        'langchain==0.0.259',
         'torch',
         'torchvision',
         'torchaudio',