An article of footwear includes an upper and a tensioning mechanism operable to move the upper between a tightened state and a loosened state and including a tensioning cable having a first end disposed on one of a lateral side and a medial side of the upper. The tensioning cable is movable in a tightening direction to move the tightening mechanism into a tightened state and movable in a loosening direction to move the tightening mechanism into a loosened state. The article of footwear also includes a locking device disposed on the one of the lateral side and the medial side of the upper. The locking device is operable between a locked state restricting movement of the tensioning cable in the loosening direction and an unlocked state permitting movement of the tensioning cable in both the loosening direction and the tightening direction.