Showtime has renewed dark comedy series Nurse Jackie for a fourth season. Meanwhile, it’s the end of the road for fellow comedy United States of Tara, which is being canceled after three seasons. Additionally, Showtime’s drama The Borgias, which has already been renewed for a second season, wrapped its freshman run last night.

Nurse Jackie, which earned star Edie Falco an Emmy last year, is created, written and executive produced by Liz Brixius and Linda Wallem, with Richie Jackson also executive producing. While not a runaway hit, the series has averaged 762,000 viewers on Monday night and 2.8 million weekly viewers so far this season. (For comparison, Season 4 of Showtime’s Californication averaged 2.4 million weekly viewers. The freshman season of breakout comedy The Big C drew 3.5 million)