Music festivals, as a rule, do not need to last four days. Three days is the perfect length, although even that can sometimes feel like overkill: Generally you spend the first day getting the hang of things and marveling at the sensory overload, the second day wilding out while navigating the site like a pro, and the third day staying in bed as long as possible then dragging yourself through the sun-scorched dirt and/or drizzle-soaked mud while wondering why you thought attending a music festival was a good idea. Or maybe that’s just me? Four days also means a more expensive ticket and one more day calling off work. But I digress!

Lollapalooza is adding a fourth day to their formerly three-day event next year in honor of the festival’s 25th anniversary. Mind you, this is the 25th anniversary of touring festival that launched the Lollapalooza brand. The tour ran from 1991-1997 and hit the road once more in 2003 before the current standalone event at Chicago’s Grant Park began in 2005. It’s unclear whether the four-day event is only for 2016 or whether the festival will continue like that going forward. Here’s Lolla founder Perry Farrell on the decision to expand to four days:

It’s our 25th Anniversary and we wanted to do something really special and different for our fans. 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 is also shifting dates ever so slightly from the first weekend of August to the last weekend of July. Next year’s event runs 7/28-31. Get more info and view ticket options here.