A surgical buttress attachment assembly includes a staple cartridge having a cartridge body and a cartridge tip, and a surgical buttress. The cartridge tip includes a distal buttress attachment assembly including a block body disposed within a cavity defined in the cartridge tip and a distal tongue extending distally from the block body. The block body is movable between an extended position and a retracted position. A proximal end portion of the surgical buttress is releasably secured to the cartridge body and a distal end portion of the surgical buttress is releasably secured to the cartridge tip by engagement of the distal tongue with the distal end portion when the block body is in the extended position.