In September 2012, Gilles and Poirier won gold at the U.S. Classic. They received two Grand Prix assignments, 2012 Skate Canada International and 2012 Trophée Éric Bompard. They finished fourth and sixth at the two events and then won the silver medal at the 2013 Canadian Championships. They were fifth at the 2013 Four Continents, winning a small bronze medal for the free dance, and eighteenth at the their first World Championships, held in London, Ontario.