diff --git a/homeassistant/components/sia/alarm_control_panel.py b/homeassistant/components/sia/alarm_control_panel.py
index 74bb48be940..9d5f62b02de 100644
--- a/homeassistant/components/sia/alarm_control_panel.py
+++ b/homeassistant/components/sia/alarm_control_panel.py
@@ -101,7 +101,7 @@ class SIAAlarmControlPanel(AlarmControlPanelEntity, RestoreEntity):
         entry: ConfigEntry,
         account_data: dict[str, Any],
         zone: int,
-    ):
+    ) -> None:
         """Create SIAAlarmControlPanel object."""
         self._entry: ConfigEntry = entry
         self._account_data: dict[str, Any] = account_data
diff --git a/homeassistant/components/sia/hub.py b/homeassistant/components/sia/hub.py
index f5d48a3282c..e5dc7b85ed8 100644
--- a/homeassistant/components/sia/hub.py
+++ b/homeassistant/components/sia/hub.py
@@ -35,7 +35,7 @@ class SIAHub:
         self,
         hass: HomeAssistant,
         entry: ConfigEntry,
-    ):
+    ) -> None:
         """Create the SIAHub."""
         self._hass: HomeAssistant = hass
         self._entry: ConfigEntry = entry