Add type annotations to `synapse.metrics` (#10847)

1 files changed, 1 insertions, 1 deletions

diff --git a/synapse/app/_base.py b/synapse/app/_base.py

index 573bb487b2..807ee3d46e 100644
--- a/synapse/app/_base.py
+++ b/synapse/app/_base.py
@@ -402,7 +402,7 @@ async def start(hs: "HomeServer") -> None:
     if hasattr(signal, "SIGHUP"):
 
         @wrap_as_background_process("sighup")
-        def handle_sighup(*args: Any, **kwargs: Any) -> None:
+        async def handle_sighup(*args: Any, **kwargs: Any) -> None:
             # Tell systemd our state, if we're using it. This will silently fail if
             # we're not using systemd.
             sdnotify(b"RELOADING=1")