Television’s proverbial cockroach (if you don’t count Supernatural), The Big Bang Theory might have an end date in sight, with co-creator Chuck Lorre looking ahead to seasons 11 and 12.

Speaking at the Television Critics Association press tour, Lorre admitted that even he’s surprised the series has been on the air for so long.

“We never really figured to be at year 11, let alone what’s going to happen after 12,” he told The Hollywood Reporter, filling the audience with confidence. “One could easily presume that would be the end of the series but I’m just amazed we’re here.”

CBS – the sitcom’s home in the US – is understandably less willing to give up it’s highest-rated show, however, with network president Kelly Kahl adding: “[We’ll continue] as long as we can go; 20 years. I hope to have it as long as we can.”

There are changes ahead for the series either way, with showrunner Steve Molaro being replaced by longtime executive producer Steve Holland as he goes to work on spin-off series, Young Sheldon.