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Jared Leto can breathe a little easier, because Martin Scorsese and Leonardo DiCaprio have found their next joint project, and it has nothing to do with the Joker. Deadline reports that the longtime collaborators, who began working together on Gangs Of New York, are reuniting for Roosevelt, a biopic about Theodore “Teddy” Roosevelt. DiCaprio will play the 26th president of the United States, with Scorsese directing from a script by Scott Bloom.

There’s no word yet on what period of Roosevelt’s life the film will center on, but there were full dull moments in it. In addition to overcoming childhood sickness to become the picture of the hearty, outdoorsy type, Roosevelt was a soldier, a writer, a naturalist, and oh yeah, president. But DiCaprio, a well-known environmentalist, is believed to have been drawn to the project by Roosevelt’s pioneering conservationist work. The Oscar winner recently roughed it in The Revenant, so he should be ready to dive right into the Rough Rider’s life story.