Dwayne Johnson finally revealed via Instagram that he has committed to the long-gestating adaptation of “Doc Savage.” He previously fueled rumors when he said he was planning to film with Director Shane Black in 2017.

According to Screen Crush, Johnson, who is Black’s favorite to play Savage after Chris Hemsworth declined to take the role, added that he has been collaborating with writers Charles Mondry and Anthony Bagarozzi “to chop up creative and break story on this very cool project.”

According to Comingsoon.net, earlier in March, Black confessed that he is determined to get Johnson on board for the project.

“Doc Savage is sort of in the ether now,” he said. “We’re hoping to make it sometime next year. I would very much like to do Doc with a fellow named Dwayne Johnson if we can make that work. I made a decision that Dwayne is the guy. It’s on the back burner while he’s busy.”

Johnson is especially busy now that he is wrapping up “Baywatch” with Zac Efron and “Fast and the Furious 8” with Vin Diesel, which is just as well as Black is also prepping for “The Predator”, which would mean their schedule would only be freed by 2017.

The new “Doc Savage” movie will serve as a reboot to a critically savaged adaptation of the comic books. “Doc Savage: The Man of Bronze” was already released in 1975.

As a comic book, “Doc Savage” first debuted in pulp magazines in 1933 and became more popular by the 1940s. Savage was conditioned as a kid to have incredible strength, martial arts skills and a photographic memory, which enabled him to become a surgeon, explorer, scientist, researcher and adventurer. Savage is widely credited for being the first superhero (even predating Superman by five years), which is why the film will be marketed as such.

A release date for “Doc Savage” has not been announced yet. However, industry experts think it will be out in theaters by 2019.