diff --git a/pyproject.toml b/pyproject.toml
index 7829cf83..8f96746b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,7 +40,7 @@ gunicorn = "^23.0.0"
 ipython = "^9.0.0"
 langchain = "^0.3.13"
 langchain-community = "^0.3.16"
-langchain-core = "^0.3.31"
+langchain-core = "^1.0.0"
 langchain-litellm = "^0.3.0"
 langchain-openai = "^0.3.0"
 langgraph = "^0.6.6"