diff --git a/homeassistant/const.py b/homeassistant/const.py
index 5afbd1daee1..2b9302c0fc9 100644
--- a/homeassistant/const.py
+++ b/homeassistant/const.py
@@ -400,6 +400,7 @@ ATTR_MANUFACTURER: Final = "manufacturer"
 ATTR_MODEL: Final = "model"
 ATTR_SUGGESTED_AREA: Final = "suggested_area"
 ATTR_SW_VERSION: Final = "sw_version"
+ATTR_HW_VERSION: Final = "hw_version"
 ATTR_VIA_DEVICE: Final = "via_device"
 
 ATTR_BATTERY_CHARGING: Final = "battery_charging"