Ahead of its return on October 9, it has been revealed that Abbott Elementary Season 4 will be featuring a crossover episode with long-time FX comedy It’s Always Sunny in the Philadelphia. This crossover was actually first teased by the cast of the acclaimed ABC sitcom,

While plenty of new faces are arriving at the Philly elementary school, Abbott fans can rest assured that some traditions are back. After having a midseason start last year, the show is back to a 22-episode season, which means holiday episodes are coming.

Abbott Elementary” star and creator, Quinta Brunson, and “It’s Always Sunny in Philadelphia” star and co-creator. Rob McElhenney, both shared news they’re collaborating on a crossover episode on social media.