Metallica has announced the cancellation of the band’s previously scheduled upcoming appearances at Sonic Temple (May 15th-17th) and Louder Than Life (September 18th-20th), singer/guitarist James Hetfield confirmed on Monday.

TOOL and the Red Hot Chili Peppers will replace Metallica at Sonic Bloom. Organizers for Louder Than Life have yet to announce a replacement.

The metal veterans, who previously announced plans to headline five hard rock festivals produced by Danny Wimmer Presents this summer along with Marston, NC’s Epicenter, Daytona Beach, FL’s Welcome To Rockville, Columbus, OH’s Sonic Temple; Louisville, KY’s Louder Than Life; and Sacramento, CA’s Aftershock.

Metallica will still play two unique sets at the Epicenter, Welcome to Rockville, and Aftershock.

Related: Tool Extends 2020 Spring Tour With New North American Dates

In a statement posted to Facebook, Hetfield explained that rehabilitation efforts for his struggles with addiction had caused the cancelations.

“As part of my continuing effort to get and stay healthy, I have critical recovery events on those weekends that cannot be moved,” the guitarist said. “I apologize to all of our fans who have bought tickets for these festivals. We are working with the festival promoters to provide for refunds or exchanges.” Read Hetfield’s full statement below.

Tickets for Metallica’s other shows are on sale now, including Epicenter, Welcome to Rockville, and Aftershock. Furthermore, details for their Global Citizen Festival appearance will be available soon. Visit their website for more information.