Cooper posted a photo to his Instagram story Thursday of his right leg in a protective boot. Sources termed the surgery a clean-up that will not require a long rehab.
Cooper had a career-high 92 catches for 1,114 yards and five touchdowns this season.
Cooper became the fourth Cowboy to reach 90 catches in a season and the first since Dez Bryant in 2012 and '13. His previous high was 83 catches in 2016 for the Raiders.