Lollapalooza will celebrate its 25th anniversary in 2016, and to celebrate, the festival will be adding a fourth day to its usual three-day schedule.

“When the party can’t wait for the weekend, the movers and shakers make it happen on Thursday!” says Festival founder and Jane’s Addiction frontman Perry Farrell.

Lollapalooza will take place in Chicago’s Grant Park on July 28-31. The lineup is yet to be announced, and tickets are expected to go on sale in the spring.