diff --git a/backend/requirements.txt b/backend/requirements.txt
index 1feecca..764d5d8 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -14,7 +14,7 @@ langchain-openai==1.1.14
 langchain_core==1.2.28
 langgraph>=0.2.0
 langfuse==2.60.2
-python-dotenv==1.1.0
+python-dotenv==1.2.2
 pytest==9.0.3
 pytest-asyncio==0.23.2
 httpx==0.27.2