Saying he‘s battling a couple different illnesses, Justin Timberlake announced Tuesday night that he’s postponing his upcoming concerts in Detroit and Grand Rapids until February. “I haven’t been feeling great the last few shows and turns out I have bronchitis and laryngitis,” Timberlake posted on social media.

The pop star was scheduled to play Little Caesars Arena on Friday, but has bumped that concert and five other shows, including Grand Rapids.

Justin Timberlake's Friday night concert at Little Caesars Arena has been postponed, according to a Tuesday announcement on Timberlake's social media channels. Friday's concert is one of several postponed by the superstar singer due to illness, he said in the announcement.