In honor of its 25th anniversary, Lollapalooza will not only add a year in age but a day in celebration.

The Chicago-based festival will expand from a three-day affair to a four-day party for 2016.

Founder Perry Farrell announced the update in a statement today (December 3).

“It’s our 25th Anniversary and we wanted to do something really special and different for our fans,” he said in a press release. “There’s a lot of really great music coming out in 2016; with the abundance of talent that wanted to help us celebrate 25 years we got to thinking… ‘How are we going to fit all those great artists in one weekend?’ Then we thought about what a special day Thursday has become. When the party can’t wait for the weekend, the movers and shakers make it happen on Thursday! So, we’ve put together an entire additional day of music to celebrate our milestone year. It’s going to be a fantastic party!”

Lollapalooza takes place July 28 to July 31 and tickets will go on sale in the spring.