diff --git a/nibe/connection/nibegw.py b/nibe/connection/nibegw.py
index 05da1fb..716d521 100644
--- a/nibe/connection/nibegw.py
+++ b/nibe/connection/nibegw.py
@@ -180,7 +180,7 @@ def _on_raw_coil_value(self, coil_address: int, raw_value: bytes):
         logger.info(f"{coil.name}: {coil.value}")
         self._heatpump.notify_coil_update(coil)
 
-    def stop(self):
+    async def stop(self):
         self._transport.close()
         self._transport = None