diff --git a/source/_integrations/lock.mqtt.markdown b/source/_integrations/lock.mqtt.markdown
index d632a06668b..341980e0efe 100644
--- a/source/_integrations/lock.mqtt.markdown
+++ b/source/_integrations/lock.mqtt.markdown
@@ -192,6 +192,11 @@ payload_open:
   required: false
   type: string
   default: OPEN
+payload_reset:
+  description: A special payload that resets the state to `unknown` when received on the `state_topic`.
+  required: false
+  type: string
+  default: '"None"'
 qos:
   description: The maximum QoS level to be used when receiving and publishing messages.
   required: false