Tyler, the Creator has pulled out of performing the Saturday of the San Francisco music festival.
He also announced he was canceling his Lollapalooza show in Chicago.
"I made a commitment that i can no longer keep, and that bums me out knowing how excited folks were," he said in his post on X.
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Organizers have already secured a replacement for the rapper in singer Sabrina Carpenter.
Outside Lands shared the news on social media Thursday morning.
Single-day and three-day passes are still available for the August 9-11 festival.