Chabon, who worked on the script for Spider-Man 2, told fan site The Amazing Website Of Kavalier & Clay that he will rework the screenplay for Pixar's first live-action movie.
"I've been hired to do some revisions to an already strong script by Andrew Stanton and Mark Andrews," he said.
The novelist noted that his love for pulp writer Edgar Rice Burroughs's original A Princess Of Mars stories were an early inspiration for him.
"I wrote my original screenplay The Martian Agent back in 1995 because I wished I could do Burroughs's Barsoom," he added. "So this is pretty much a dream come true for me."
Movie adaptations of Chabon novels Wonder Boys and The Mysteries Of Pittsburgh have already been filmed, while Stephen Daldry is attached to direct a big screen version of his acclaimed book The Amazing Adventures Of Kavalier & Clay.