diff --git a/README.md b/README.md
index b7bb00d..613ba13 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,7 @@ API
 
 * `cron.after(time, callback)` will execute callback after the given amount of time units. Returns an identifier (`id`)
 * `cron.every(time, callback)` will repeat the same action periodically. Returns an identifier (`id`)
+* `cron.doFor(time, callback)` will execute a callback every time `cron.update` is called until the timer expires. Returns an identifier (`id`)
 * `cron.cancel(id)` will stop a timed action from happening, and will interrupt the periodical execution of a periodic action.
 * `cron.reset()` removes all timed and periodic actions, and resets the time passed back to 0.
 * `cron.update(dt)` is needed to be executed on the main program loop. `dt` is the amount of time that has passed since the last iteration. When `cron.update` is executed, cron will check the list of pending actions and execute them if needed.