diff --git a/docs/core/entity/sensor.md b/docs/core/entity/sensor.md
index 6dafab05..d5352c36 100644
--- a/docs/core/entity/sensor.md
+++ b/docs/core/entity/sensor.md
@@ -62,6 +62,7 @@ If specifying a device class, your sensor entity will need to also return the co
 | timestamp | | Timestamp. Requires `native_value` to return a Python `datetime.datetime` object, with time zone information, or `None`.
 | volatile_organic_compounds | µg/m³ | Concentration of volatile organic compounds
 | voltage | V | Voltage
+| volume | L, mL, gal, fl. oz., m³, ft³ | Generic volume
 
 ### Available state classes