diff --git a/readme.md b/readme.md
index 323fa6c..4cf201e 100644
--- a/readme.md
+++ b/readme.md
@@ -30,6 +30,7 @@ All settings are in `system/extensions/yellow-system.ini`:
`MastodonapiAccountId` = your Mastodon user ID (numeric, e.g. 1234567890)
> Find the ID of a Mastodon account: Enter "https://YOUR_INSTANCE_URL/api/v1/accounts/lookup?acct=PROFILNAME" in your browser.
> Find the ID of a GoToSocial account (see here)
+
`MastodonapiAccessToken` = optional for a Mastodon account, mandatory for a GoToSocial account (see here)
`MastodonapiUpdateInterval` = time interval between automatic updates in minutes (default: 30).
`MastodonapiLimit` = number of Toots retrieved per run (default: 20).