CBS today announced that it has renewed Young Sheldon for a further two seasons, taking the show through to its fourth season in 2020/21.

"Thanks to Chuck Lorre's and Steve Molaro's outstanding creative leadership, YOUNG SHELDON has been a powerful performer for the Network with an audience that towers over most of the television landscape," said Kelly Kahl, President, CBS Entertainment. Added Thom Sherman, Senior Executive Vice President of Programming: "The Coopers are portrayed by an amazing cast, and we are looking forward to having the gifted writing staff mine even more of Sheldon's hilarious backstory and the warm family dynamic that has made this comedy a favorite with audiences for the past two seasons."

Young Sheldon, which focuses on Sheldon's early life a boy genius in East Texas in the '90s, premiered in 2017. Now in its second season, the show ranks as the second most-watched comedy series on TV, behind only The Big Bang Theory.

The renewal comes as The Big Bang Theory heads toward the end of its twelve season run on CBS. Although the show's producers have indicated they would could be open to another spin-off series if the right idea presented itself, no project is thought to be in development.