diff --git a/ipserv.py b/ipserv.py
index 6a362ea..c1f789e 100644
--- a/ipserv.py
+++ b/ipserv.py
@@ -10,7 +10,7 @@ from contextlib import asynccontextmanager
 logging.basicConfig(level=logging.INFO)
 
 
-@asynccontextmanager()
+@asynccontextmanager
 async def lifespan(_app: FastAPI):
     async with aiohttp.ClientSession(
         "https://ip.shronk.tech",