diff --git a/src/chat-messages.js b/src/chat-messages.js
index ac166a9..eb054e0 100644
--- a/src/chat-messages.js
+++ b/src/chat-messages.js
@@ -442,7 +442,9 @@ const ChatMessages = function (privateClient, publicClient) {
      * @param {string} message.from      - The sender of the message
      * @param {string} message.text      - The message itself
      * @param {string} message.type      - Type of message (one of text, join, leave, action)
-     * @param {string} [message.id]      - Unique ID of message. TODO implement
+     * @param {string} [message.id]      - Unique ID of message.
+     * @param {string} [message.sid]     - Unique stanza ID of message (XMPP only)
+     * @param {boolean} [message.edited] - If the message has been edited
      *
      * @returns {Promise}
      */