diff --git a/frigate/app.py b/frigate/app.py
index 2799d47b8..580ddb6a9 100644
--- a/frigate/app.py
+++ b/frigate/app.py
@@ -661,6 +661,7 @@ class FrigateApp:
                 self.onvif_controller,
                 self.external_event_processor,
                 self.stats_emitter,
+                self.event_metadata_updater,
             ).run(host="127.0.0.1", port=5001, debug=False, threaded=True)
         finally:
             self.stop()