It seems that the latest partner at Sterling Cooper Draper Pryce will be sticking around as a series regular next season. Ausiello Files is reporting that Jared Harris has been promoted to a series regular on Mad Men for the upcoming fourth season.

Harris appeared in a guest-starring capacity as Lane Pryce last season, who became a partner in the firm in the Season 3 finale alongside Jon Hamm's Donald Draper, John Slattery's Roger Sterling and Robert Morse's Bertram Cooper.

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Mad Men stars Jon Hamm, Elisabeth Moss, Vincent Kartheiser, Christina Hendricks, January Jones, Aaron Staton, Michael Gladis and John Slattery. A premiere date for Season 4 has not been announced as of yet.