Calum Butcher bagged a double, with Louis Appere, Lawrence Shankland (penalty), Ian Harkes and Cammy Smith also on target. Kane Hemmings and Andrew Nelson replied for the Dark Blues.
In the night's other game, Inverness CT thrashed Morton 5-0 in the Highland capital to move up to second in the table. James Keatings scored twice, with Jordan White, Coll Donaldson and Nikolay Todorov also on the mark.
