diff --git a/backend/requirements.txt b/backend/requirements.txt
index 435ea1b..798756d 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -2,7 +2,7 @@ fastapi>=0.111
 uvicorn[standard]>=0.29
 httpx>=0.27
 sqlalchemy[asyncio]>=2.0
-greenlet>=3.0
+greenlet>=3.5.6
 asyncpg>=0.29
 aiosqlite>=0.20
 pydantic>=2.7