 In August 2013, Aranzubia signed for Atlético Madrid as a backup to Thibaut Courtois.He made his debut in the UEFA Champions League on 11 December 2013 shortly after his 34th birthday, saving a penalty from FC Porto's Josué in a 2–0 group stage home victory.As the Belgian was unavailable due to injury, Aranzubia first played in the league with the "Colchoneros" on 8 February 2014, being sent off in the last minutes of a 0–2 loss at Almería after fouling Jonathan Zongo in the box.