A system for securing a truck bed cover includes a pair of vertical side rails clamped to the bed railing of a pickup truck. A first one of a pair of horizontal side rails is attached along the front side of the truck bed and the second one of the pair of horizontal side rails is attachable via a latching mechanism along the rear. The cover is attached along respective front and rear edges to each of the horizontal side rails, and is attachable along respective side edges to the vertical side rails, preferably, using a hook-and-loop fastener. Tensioning devices are employed to keep the cover taut and even on both sides.