diff --git a/pyproject.toml b/pyproject.toml
index 6dfa01eea..b09aa78f6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,8 +11,8 @@ django = "4.2.14"
 djangorestframework = "^3.15.2"
 drf-yasg = "1.21.7"
 django-filter = "23.2"
-langchain = "^0.2.3"
-langchain_community = "^0.2.3"
+langchain = "0.2.3"
+langchain_community = "0.2.3"
 langchain-huggingface = "^0.0.3"
 psycopg2-binary = "2.9.7"
 jieba = "^0.42.1"