diff --git a/homeassistant/components/vicare/water_heater.py b/homeassistant/components/vicare/water_heater.py
index 3357d2e0a31..65e1bd87750 100644
--- a/homeassistant/components/vicare/water_heater.py
+++ b/homeassistant/components/vicare/water_heater.py
@@ -105,7 +105,7 @@ class ViCareWater(WaterHeaterEntity):
         self._attr_name = name
         self._api = api
         self._circuit = circuit
-        self._attributes = {}
+        self._attributes: dict[str, Any] = {}
         self._current_mode = None
         self._attr_unique_id = f"{device_config.getConfig().serial}-{circuit.id}"
         self._attr_device_info = DeviceInfo(