diff --git a/pyproject.toml b/pyproject.toml
index bda0e7e187..c075cf6fb4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -57,7 +57,7 @@ html5lib = "^1.1"
 ipython = "^9.0.0"
 isodate = "^0.7.2"
 jedi = "^0.19.0"
-langchain = "^0.3.11"
+langchain = "^1.0.0"
 langchain-experimental = "^0.3.4"
 langchain-openai = "^0.3.2"
 litellm = "1.79.3"