A dock for a portable electronic device includes a base and an arm movably supported on the base. The arm has a ratchet gear set and a distal end configured to engage the portable electronic device to secure the portable electronic device to the base. The dock further includes a ratchet pawl positioned within the base. The ratchet pawl is movable between a first position, in which the ratchet pawl engages the ratchet gear set to inhibit movement of the arm relative to the base, and a second position, in which the ratchet pawl disengages the ratchet gear set to allow movement of the arm relative to the base. The dock further includes an electronic actuator operable to actuate the ratchet pawl from the first position to the second position.