diff --git a/doc/handsfree-api.txt b/doc/handsfree-api.txt
index 94e9a8f9..5f45efbd 100644
--- a/doc/handsfree-api.txt
+++ b/doc/handsfree-api.txt
@@ -76,3 +76,7 @@ Properties	array{string} Features [readonly]
 
 			The current charge level of the battery.  The value
 			can be between 0 and 5 respectively.
+
+		array{string} SubscriberNumbers [readonly]
+
+			List of subscriber numbers provided by the AG.