Little Rock’s annual music festival, which celebrated its 40th anniversary in June, has been suspended, officials say.

“We can no longer deliver the experience that Riverfest fans have come to expect,” DeAnna Korte, Riverfest’s executive director, said in a news release. “Rising costs of performers’ fees, coupled with a greater number of competing festivals around the country are the underlying factors leading to this decision.”

The festival’s 2017 headliner was Wiz Khalifa. Cage the Elephant and Grouplove also played in 2017. Riverfest usually features a mix of national and local musicians.

Acts in past years have included Chris Stapleton, the Goo Goo Dolls, B.B. King, Carrie Underwood, Hank Williams Jr., Lynyrd Skynyrd, Sheryl Crow, Snoop Dogg, Train, Willie Nelson, ZZ Top and many more.