Jackson was recalled from Triple-A Gwinnett on Sunday, David O'Brien of The Atlanta Journal-Constitution reports.
Jackson will return to the majors for the first time since a stint in early April, and will once again provide the Braves with right-handed bullpen depth. In five appearances for Gwinnett this season, Jackson owns a 3.86 ERA and 1.17 WHIP. He'll replace Lucas Sims, who was optioned to Triple-A in a corresponding move.