diff --git a/pyproject.toml b/pyproject.toml
index 52aad8ab2..e401907ba 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,7 +22,7 @@ dependencies = [
     "fastapi~=0.89",
     "httpx~=0.23",
     "jinja2~=3.1",
-    "langchain~=0.0.151",
+    "langchain==0.0.153",
     "nest_asyncio~=1.5",
     "openai~=0.27",
     "pendulum~=2.1",