diff --git a/pyproject.toml b/pyproject.toml
index 4a71403e..3a2bc058 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ classifiers = [
 python = "^3.8.1"
 transformers = "*"
 openai = "*"
-langchain = "0.0.240"
+langchain = "*"
 asyncio = "*"
 nest_asyncio = "*"
 pegasusx = "*"
diff --git a/requirements.txt b/requirements.txt
index 9d6ab67b..493186aa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,8 @@ faiss-gpu
 transformers
 pandas
 numpy
-langchain==0.0.240
+# langchain==0.0.240
+langchain
 nest_asyncio
 pegasusx
 google-generativeai