A door security device for arranging on a floor surface proximate a bottom portion of an inwardly opening door includes a chock. The chock has a front surface extending substantially parallel to a plane of the door when the chock is in an operative position and a bottom surface adapted to rest against the floor surface. The bottom surface extends substantially perpendicular to the plane of the door when the chock is in the operative position. The chock has a top surface disposed between the front and bottom surfaces. An opening extends through the chock from the top surface to the bottom surface. The device also includes a pin sized to be received in the opening, a hollow tube for inserting into a hole in the floor surface and a cap for covering a top portion of the hollow tube.