'Young Sheldon' & 'Big Bang Theory' Crossover is in the Works!

Exciting news for Sheldon fans!

Young Sheldon actors are set to make appearances on The Big Bang Theory during a time-jumping crossover episode in December, THR reports.

Iain Armitage (Jim Parsons‘s Sheldon), Lance Barber (Sheldon’s dad, George), and Montana Jordan (Sheldon’s older brother, Georgie) will all portray their spinoff characters in the episode.

Details are still being kept under wraps.

The Big Bang Theory, currently in its 12th and final season, airs Thursdays at 8 p.m., and Young Sheldon airs Thursdays at 8:30 p.m., both on CBS.