diff --git a/README.md b/README.md
index 5bbc904ad167641e90699e572e410b5f6d22b1cf..7974409e3299fb440175fdf3c8c5ea76a2d901f6 100644
--- a/README.md
+++ b/README.md
@@ -68,6 +68,7 @@ digital_outputs:
     off_payload: "OFF"
     initial: low  # This optional value controls the initial state of the pin before receipt of any messages from MQTT. Valid options are 'low' and 'high'.
     retain: yes # This option value controls if the message is retained. Default is no.
+    publish_initial: yes # Publish the initial value of the output on startup. Default is no.
 
   - name: fan
     module: raspberrypi