Singer Kelly Clarkson has postponed the remainder of her Las Vegas residency dates for August as she opens up about her ex-husband’s health issues. “Unfortunately, I need to postpone the remainder of the August Studio Session dates in Las Vegas,” the star said in an Instagram post late Wednesday.

This marks Clarkson’s second time canceling her “Kelly Clarkson: Studio Sessions – The Las Vegas Residency” at Caesars Palace since it started last month. The day it was scheduled to kick off on Friday, July 4, the singer announced she was postponing her first two shows. At the time, Clarkson blamed her vocals.