diff --git a/docs/core/entity/number.md b/docs/core/entity/number.md
index 0ca89341533..8fcba972003 100644
--- a/docs/core/entity/number.md
+++ b/docs/core/entity/number.md
@@ -34,7 +34,7 @@ If specifying a device class, your number entity will need to also return the co
 | `NumberDeviceClass.APPARENT_POWER` | VA | Apparent power
 | `NumberDeviceClass.AQI` | None | Air Quality Index
 | `NumberDeviceClass.AREA` | m², cm², km², mm², in², ft², yd², mi², ac, ha | Area
-| `NumberDeviceClass.ATMOSPHERIC_PRESSURE` | cbar, bar, hPa, mmHG, inHg, kPa, mbar, Pa, psi | Atmospheric pressure
+| `NumberDeviceClass.ATMOSPHERIC_PRESSURE` | cbar, bar, hPa, mmHG, inHg, inH2O, kPa, mbar, Pa, psi | Atmospheric pressure
 | `NumberDeviceClass.BATTERY` | % | Percentage of battery that is left
 | `NumberDeviceClass.BLOOD_GLUCOSE_CONCENTRATION` | mg/dL, mmol/L | Blood glucose concentration```
 | `NumberDeviceClass.CO2` | ppm | Concentration of carbon dioxide.
diff --git a/docs/core/entity/sensor.md b/docs/core/entity/sensor.md
index 90fddaa625f..e095b3fa5b4 100644
--- a/docs/core/entity/sensor.md
+++ b/docs/core/entity/sensor.md
@@ -35,7 +35,7 @@ If specifying a device class, your sensor entity will need to also return the co
 | `SensorDeviceClass.APPARENT_POWER` | VA | Apparent power
 | `SensorDeviceClass.AQI` | None | Air Quality Index
 | `SensorDeviceClass.AREA` | m², cm², km², mm², in², ft², yd², mi², ac, ha | Area
-| `SensorDeviceClass.ATMOSPHERIC_PRESSURE` | cbar, bar, hPa, mmHG, inHg, kPa, mbar, Pa, psi | Atmospheric pressure
+| `SensorDeviceClass.ATMOSPHERIC_PRESSURE` | cbar, bar, hPa, mmHG, inHg, inH2O, kPa, mbar, Pa, psi | Atmospheric pressure
 | `SensorDeviceClass.BATTERY` | % | Percentage of battery that is left
 | `SensorDeviceClass.BLOOD_GLUCOSE_CONCENTRATION` | mg/dL, mmol/L | Blood glucose concentration
 | `SensorDeviceClass.CO2` | ppm | Concentration of carbon dioxide.