The comedy, from Tina Fey and Robert Carlock, has been a critical darling since it moved from NBC to Netflix in a surprise pre-premiere move.

You may not be able to break Kimmy Schmidt, but you can't keep her on the air forever.

Sources have confirmed to The Hollywood Reporter that Netflix darling Unbreakable Kimmy Schmidt will wrap at the conclusion of its upcoming fourth season — though there are talks of doing a movie after it's all done.

Producers NBCUniversal and streamer Netflix declined to comment, but the next batch of Unbreakable Kimmy Schmidt episodes (split in two parts) will be the last. Filming is only halfway complete on the run, delayed so that co-creator Tina Fey could launch her Tony-nominated Mean Girls musical on Broadway, so there's no chance of an abrupt end for the Emmy-favored comedy.

Unbreakable Kimmy Schmidt had an unlikely path. It was originally planned for NBC, the first post-30 Rock project for Fey and fellow showrunner Robert Carlock, but the sister studio and Netflix hammered out a then-unprecedented deal to move it over to the streamer ahead of the premiere. There's never been any indication of how well the show has performed among subscribers, but its previous three seasons have clocked a total 16 Emmy nominations.

Discussions of a potential wrap-up movie suggest that this is an ongoing conversation between the show and the streamer and not an abrupt move.

Starring Ellie Kemper, Jane Krakowski, Carole Kane and breakout Tituss Burgess, Unbreakable Kimmy Schmidt launched with one of the more niche premises in TV comedies: A naive woman (Kemper), freed from more than a decade of bunker imprisonment by a doomsday cult, moves to New York to start a new life. On camera and off, it was very much a 30 Rock reunion, with Fey and Carlock retaining much of their crew for the Brooklyn-shot single-camera effort.

The news comes hours after Netflix released a trailer for the fourth season's first six episodes. Those will be released in time for Emmy eligibility, on May 30, with the rest launching later this year.