The duo have signed two-year contract extensions at McDiarmid Park.
“We are pleased to get Garts and Ando signed up,” manager Derek McInnes told the club’s official website. “We are looking to get one or two things sorted out over the next few weeks.
“I’d like to add a few more to the squad over the summer. The players have done very well this year but like every manager I want to improve every season.”
