By Eric Renner Brown
December 03, 2015 at 04:33 PM EST
Michael Hickey/Getty Images

One of the country’s biggest music festivals will get even bigger in 2016. Lollapalooza, the annual event held in Chicago’s Grant Park, announced Thursday that next year it will expand to a four-day fest in honor of its 25th anniversary.

“It’s our 25th Anniversary and we wanted to do something really special and different for our fans,” Lollapalooza founder and Jane’s Addiction frontman Perry Farrell wrote 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!”

The 2016 incarnation of Lollapalooza will take place from July 28 to July 31 and tickets go on sale in the spring. The press release did not state whether the expansion to four days is permanent or a one-time change in honor of the event’s anniversary.

Farrell founded Lollapalooza in 1991 as a traveling festival. That version ended in 1997 but was revived in 2003, before an ill-fated expansion in 2004 led organizers to permanently move the event to Grant Park in 2005, where it has been ever since. In recent years the festival has added events in Brazil, Chile, and Germany. Paul McCartney, Florence + the Machine, and Metallica headlined this summer’s flagship event in Chicago.