diff --git a/requirements.txt b/requirements.txt
index 795d981..1a61294 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,5 @@ deepagents
 langchain>=1.2.10
 langchain-openai>=0.3.0
 langgraph>=0.2.0
+pydantic>=2.0
 python-dotenv