diff --git a/homeassistant/components/esphome/update.py b/homeassistant/components/esphome/update.py
index 0f4836d0c66..de7a7463191 100644
--- a/homeassistant/components/esphome/update.py
+++ b/homeassistant/components/esphome/update.py
@@ -72,15 +72,13 @@ class ESPHomeUpdateEntity(CoordinatorEntity[ESPHomeDashboard], UpdateEntity):
     _attr_title = "ESPHome"
     _attr_name = "Firmware"
 
-    _device_info: ESPHomeDeviceInfo
-
     def __init__(
         self, entry_data: RuntimeEntryData, coordinator: ESPHomeDashboard
     ) -> None:
         """Initialize the update entity."""
         super().__init__(coordinator=coordinator)
         assert entry_data.device_info is not None
-        self._device_info = entry_data.device_info
+        self._entry_data = entry_data
         self._attr_unique_id = entry_data.device_info.mac_address
         self._attr_device_info = DeviceInfo(
             connections={
@@ -88,6 +86,12 @@ class ESPHomeUpdateEntity(CoordinatorEntity[ESPHomeDashboard], UpdateEntity):
             }
         )
 
+    @property
+    def _device_info(self) -> ESPHomeDeviceInfo:
+        """Return the device info."""
+        assert self._entry_data.device_info is not None
+        return self._entry_data.device_info
+
     @property
     def available(self) -> bool:
         """Return if update is available."""