diff --git a/routers/system.py b/routers/system.py
index 2b20d87..165592c 100644
--- a/routers/system.py
+++ b/routers/system.py
@@ -12,4 +12,4 @@ router = APIRouter()
 @router.post("/system/update")
 def update(access_token: APIKey = Depends(get_system_key)):
     output = subprocess.check_output(['git', 'pull'], encoding='utf-8')
-    sys.exit()
+    sys.exit(4)