Amazon and CBS have decided to extend their exclusive streaming deal through 2018 and adding new CBS summer shows to Amazon Prime Video.

The deal builds on the relationship between the two companies, which started back in February 2013, when CBS agreed to name Amazon the exclusive streaming home of Under The Dome. Amazon also agreed to stream the Halle Berry series Extant.

However, with Dome ending, Amazon had to secure deals for CBS’ future summer shows to keep the relationship going. Today, Amazon made that deal and will be the streaming home of the new dramedy BrainDead with Mary Elizabeth Winstead.

The new deal will cover two future CBS summer shows as well. The deal also adds more Showtime programs, as well as other shows from the CBS library. Movies produced by CBS Films will also be added to Amazon Prime Video.