diff --git a/requirements.txt b/requirements.txt
index fc90895..a7ebffc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
 langchain-openai>=0.3.0
 langgraph>=0.2.0
-python-dotenv>=1.0.0
+langchain-core>=0.3.0
+python-dotenv>=1.0.0
\ No newline at end of file