[2] He made the active roster following training camp and played in his first professional game on June 21, 2018, against the Saskatchewan Roughriders.

[3] He also played in both postseason games that year and scored his first touchdown on an 11-yard pass from Trevor Harris in the East Final on November 18, 2018.

[3][4] He also played in his first Grey Cup game that year, but the Redblacks lost to the Calgary Stampeders in the 2018 championship.

[3] He did not play in 2020 due to the cancellation of the 2020 CFL season and instead re-signed with the Redblacks to a one-year extension on December 17, 2020.

[6] Dubois played in all 18 regular season games in 2022 where he had four receptions for 70 yards and a career-high nine special teams tackles.