Speaking on BBC Radio 2 on Monday, the Scottish actor, 58, announced that the new series of Doctor Who “will be my last… I feel it’s time to move on,” according to a tweet posted by the official Doctor Who twitter account.
Referencing the upcoming season Capaldi added, “We’re doing epic stuff! I’m still not done yet.”
The new season of Doctor Who, the first to costar Pearl Mackie as the Doctor’s new “companion” Bill, is set to premiere this spring.
This article originally appeared on PEOPLE.com.