diff --git a/docs/user-guide/configuration.md b/docs/user-guide/configuration.md
index 687cd46..0ee596c 100644
--- a/docs/user-guide/configuration.md
+++ b/docs/user-guide/configuration.md
@@ -202,6 +202,7 @@ Option                                 | Description
 -------------------------------------- | --------------------------------------
 addressbook.defaulturl                 | AddressBook subscription URL for initial setup
 addressbook.subscriptions              | AddressBook subscriptions URLs, separated by comma
+addressbook.hostsfile                  | File to dump AddressesBook in hosts.txt format
 
 ### Limits