Iain Russell's late goal sealed the points for Livingston as they beat Dumbarton 2-0.
Livingston hit the ground running straight from the off and should have been ahead as early as the fifth minute but Craig Barr's shot struck the post.
Paul Watson did break the deadlock after 17 minutes when he converted Aaron Conway's in-swinging corner from close range.
Kyle Jacobs and Conway fired over from 20 yards while Raffaele De Vita saw his shot saved by Stephen Grindley as Livingston went in search of their second goal.
Livi did however find their second goal as Russell's left-foot shot found the bottom corner to seal the three points for Livi and send them to the top of the table.