Melbourne young gun Dom Tyson has signed a two-year AFL contract extension which will keep him with the Demons until the end of 2019.

The 23-year-old onballer has continued to improve since arriving from Greater Western Sydney in 2014, averaging a career-high 25 disposals per game this season.

“(Dom) has added different layers to his craft each year and we look forward to that continuing as our young midfield develops as a group,” football manager Josh Mahoney told the Demons website on Wednesday.