The singer revealed the news to XFM. We'd like to give you a quote but it just went something like this..
XFM: "Are you playing Glastonbury?"
So there you have it. No news on what stage or day but we'd say probably just before The Who headline the Pyramid Stage on Sunday night. Either that or headlining the Other Stage on one of the three nights.
Other acts who've already confirmed themselves include Pyramid openers Adjagas, The Who, Kasabian, Lily Allen, Hot Chip, Chumbawumba and The Killers.
Arctic Monkeys, Bjork, Arcade Fire, Editors, Daft Punk, The Happy Mondays, Bloc Party, The View, Klaxons and Madness are also hotly tipped to play.
Glastonbury Festival takes place at Worthy Farm, Pilton, Somerset, from 22-24 June. Click on the links below for more information, including how to register for your ticket before the end of February.