Hans Zimmer is returning to superhero movies. The composer behind The Dark Knight Trilogy and other comic book movies is scoring X-Men: Dark Phoenix for Fox this year. Zimmer had previously said he was retiring from superhero movies after Batman v Superman: Dawn of Justice.

Evan Peters, who plays Quicksilver in the franchise, shared the news on MTV’s Happy Sad Confused podcast with Josh Horowitz (via Collider). Peters was talking about the experience of working with director Simon Kinberg, who is directing his first film when he let the bigger news slip.

“[The set] was actually very tame. Simon directed this one, and came in very prepared, very professional. It was a different energy on set and everything got done like clockwork. It was very seamless. Everybody was a little bit more level-headed, so it was a very pleasurable, light experience. I think the film is gonna be incredible. Hans Zimmer’s scoring it—I don’t know if I was supposed to say that or not. Simon has surrounded himself with incredible people, and Simon knows this world better than anybody, so it was just cool to see him—he’s so happy and in his element in that world, and also being able to direct and guide everybody in this way. I was very happy for him and I think it’s gonna be great.”

This is a big get for the X-Men franchise and very surprising given that Zimmer told BBC’s HARDTalk, ““I have officially retired from the superhero business,” back in March 2016. That retirement has turned into more of a sabbatical, as it turns out.

Now that Zimmer is back in the game and working on a franchise that Disney will soon own after purchasing most of 21st Century Fox, perhaps there will be an opportunity for the legendary composer to work with Marvel Studios.