By Martin Goillandeau, CNN(CNN) — Dolly Parton won’t be lighting up the Las Vegas Strip this December after revealing to fans that “some health challenges” are forcing her to postpone her residency in the city. Parton was set to perform six shows at the Colosseum at Caesars Palace from December 4 to 13 in her first Las Vegas residency in more than 30 years. Current tickets are valid for the new dates and refunds are also available, according to the post. In July, she said on Khloé Kardashian’s podcast that she was taking a break from writing new music to grieve. In November, Parton is set to receive the Jean Hersholt Humanitarian Award, an honorary Oscar, for her “unwavering dedication to charitable efforts,” the Academy of Motion Picture Arts and Sciences announced.