An integrated adjustable keeper shim for an electric strike is provided. The keeper shim may be included in a keeper assembly of the electric strike, wherein the electric strike includes a housing defining an entry chamber that operates in conjunction with a latch of a lockset. The engaged position of the latch secures a door within the entry chamber when the door is in a closed state. The keeper assembly comprises a keeper rotatably mounted to the housing, and is movable between a locked position and an unlocked position. The keeper retains the latch in the entry chamber when the keeper is in the locked position and the latch is in the engaged position. The keeper shim is adjustably mounted to the keeper, wherein a position of the keeper shim relative to the keeper is selected to minimize a gap defined between the keeper shim and the latch.