The Marlins selected Bermudez's contract from Triple-A Jacksonville on Saturday.
Just four days after being sent outright to Jacksonville, Bermudez will now rejoin the active roster to give the Marlins an additional bullpen arm capable of handling multiple innings. The 28-year-old southpaw allowed two earned runs in 3.2 innings during his MLB debut Aug. 27 and will presumably be used in long relief again while with the Marlins. Austin Kitchen was designated for assignment in a corresponding move.