John Mayer was rushed to hospital for an emergency surgery on Tuesday his rep and band confirmed.
The musician was taken to hospital in New Orleans to undergo an emergency appendectomy, his rep told PEOPLE.
John Mayer's band Dead & Company also took to Twitter to announce the news:
"Early this morning, Tuesday, December 5th, John Mayer was admitted into the hospital for emergency appendectomy forcing the Dead & Company December 5th concert in New Orleans to be postponed," they Tweeted.
"All tickets for the December 5 show will be honored for the rescheduled date. Information on the rescheduled date will be announced as soon as possible. Should ticketholders choose to seek a refund, they will be available at point of purchase."
John's fellow bandmates have all taken to social media to wish the 40-year-old a speedy recovery.
Get well soon, John!