Myers was a late inclusion to join Team Canada at the 2019 World Championships underway in Slovakia on May 15, 2019. Recalled to the squad as an injury replacement for Brandon Montour, Myers made his full international debut in a 5–2 round-robin victory over France on May 16, 2019. Myers helped Canada progress through to the playoff rounds before losing the final to Finland to finish with the Silver Medal on May 26, 2019. He finished the tournament posting 1 assist from the blueline in 7 games.