Update, 3:25 p.m.

Three-day weekend passes for the 2021 Austin City Limits Music Festival sold out in less than three hours, according to ACL representatives.

Single-day tickets for the 20th anniversary festival go on sale May 25 at noon. A daily lineup will be released at 10 a.m. on the same day.

“After an incredibly challenging year for the Austin community, artists, crews and the music industry in general, today’s sellout is a resounding message that fans are ready to gather safely and to see live music again. We are really excited to see this lineup in person and to reunite in Zilker Park this October,” said Amy Corbin, a promoter for concert promoter C3 Presents, in a news release.

Original post, 10:41 a.m.

The Austin City Limits Music Festival has announced its 2021 concert lineup, with headliners including George Strait, Billie Eilish, Stevie Nicks, Miley Cyrus, Rufus Du Sol, DaBaby and Erykah Badu.

This year's festival takes place at Zilker Park across two weekends: Oct. 1-3 and 8-10. General admission tickets for both weekends go on sale May 20 at noon. Presale to American Express cardholders is ongoing, with prices starting at $275.

Acts performing both weekends include Megan Thee Stallion, Doja Cat, Machine Gun Kelly, Black Pumas, Greta Van Fleet and Phoebe Bridgers, among others. Performing exclusively on weekend one are St. Vincent, Tanya Tucker and Asleep at the Wheel. Weekend two acts include Jon Batiste, Trixie Mattel and Heartless Bastards.

ACL has not announced the specific health and safety restrictions planned for the festival but said it will "encourage [COVID-19] vaccination in the months prior to the festival."

See the full lineup here.