diff --git a/requirements.txt b/requirements.txt
index 182ebe3..2908458 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
 langgraph>=0.2.0
 langchain-openai>=0.1.0
+pydantic>=2.0.0
 python-dotenv>=1.0.0
\ No newline at end of file