The series, based on a short story by Elmore Leonard, stars Timothy Olyphant as U.S. Marshal Raylan Givens.
The new run will consist of 13 episodes and will air on Wednesdays at 10/9c.
Joseph Lyle Taylor, Margo Martindale and former Lost star Jeremy Davies will all appear in the second season, while Walton Goggins has been promoted to a series regular.
Series creator Graham Yost previously revealed that the new episodes will see Givens still adjusting to his new life in Kentucky.
The first season of Justified concluded on June 8.