Casemiro scored four goals in 25 matches in the 2016–17 campaign, helping his team win the national championship for the first time in five years. He scored a long-range strike in the Champions League final against Juventus FC, helping his side to a 4–1 victory; he again found the net on 8 August 2017, putting his team ahead in an eventual 2–1 defeat of Manchester United for the UEFA Super Cup.