Sherlock showrunner Steven Moffat caught up with Cultbox about the uncertain future of the hit series and whether we’ll get season 5 any time soon. To put it plainly, we shouldn’t expect new Sherlock for a while, according to Moffat, who points out that “everyone is busy.”

That said, Moffat remains as always hopeful for the future.

“I vaguely assume we will do it again at some point. I don’t think it will be very soon. It’s due a longer gap,” Moffat continued. “It is still enormously successful, so there will always be a demand for it, I hope. And there is no upper limit on how long we can do it. Holmes and Watson can be 60 or 70.”

This is certainly true. Down the line, we could be looking at an Old Man Sherlock situation, as the character was always portrayed a bit older in the original stories. Of course, that would mean we’d have to wait for star Benedict Cumberbatch, who’s 41, to get quite a bit older.