Gibson was loaned to AHL Hershey on Sunday.
Washington recalled Clay Stevenson from the minors in a corresponding move. Due to the absence of Charlie Lindgren (upper body), Gibson was Logan Thompson's backup for the last two games. The 26-year-old Gibson has posted a 9-8-3 record with a 2.79 GAA and a .907 save percentage in 22 AHL appearances this season.