diff --git a/backend/requirements.txt b/backend/requirements.txt
index ed71594..7572636 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -11,7 +11,7 @@ httpx==0.28.1
 idna==3.10
 iniconfig==2.0.0
 pydantic==2.10.6
-pydantic_core==2.27.2
+pydantic_core==2.39.0
 pytest==8.3.4
 pytest-asyncio==0.25.3
 pytest-mock==3.14.0