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Update 1/21: Beck has been added as a Firefly headliner!

Firefly Music Festival is returning to The Woodlands in Dover, Delaware, for the third year in a row June 19-22. 

Alongside headliners Foo Fighters, Jack Johnson and the recently reunited OutKast, the lineup also includes Arctic Monkeys, The Lumineers, Weezer, Imagine Dragons and more than 95 additional acts performing across seven stages over four days.

Yep, this year festival-goers can look forward to a full extra day of music. "The addition of a fourth day, along with the expansion of our festival acreage and lineup, makes this the most exciting Firefly yet. These changes reflect our commitment to providing our fans the premier experience they expect from us not only this year, but in the years to come," Firefly Music Festival Director Greg Bostrom said in a statement.

Check out the full Firefly lineup here. And in case you can't make it to Dover, OutKast announced they're playing 40 festival dates this summer, so hopefully they're headed to your area.