Abstract: There is disclosed a self-adjusting latch for an overhead truck door comprising a latch bolt, a keeper, and a bolt catch all pivotally mounted at predetermined locations on a common support plate. The latch bolt has an integral actuating arm and an integral hook for latching engagement with a catch pin mounted in the bed of the truck. The weight of the latch bolt is distributed in such a manner that after latching, the latch bolt is continuously urged against the catch pin. Thus the latch is continuously self-adjusting during normal operation of the truck over rough or uneven terrain. The keeper is rotatable from a locked to an unlocked position, and when it is in the locked position it prevents unlatching of the latch bolt by abutting engagement thereagainst. When the truck is in transit, the keeper is maintained in the locked position by locking a finger thereon against a lug struck out from the support plate.