"The Peanuts Movie" producer Paul Feig assures fans he's kept the beloved comic strip characters' best interests in mind while working on the 3D-animated feature.

"It's very sweet," he told Collider at SXSW. "It's totally a G-rated movie, because you can't get edgy with Charlie Brown. That was the Schulz family's fear, that me and Fox everybody were gonna come in and hip it up and cast Justin Bieber as Charlie Brown and have it like 'Space Jam' or something. All of us were like, 'No.' We cast kids that sound exactly like the kids you remember from the specials. It's very pure of heart.”

That has to be music to the ears of longtime "Peanuts" fans, as well as well as to the family of Charles M. Schulz, who have been actively involved with the project.

"I'm really happy with it," Feig said. "It's a scary thing to take on, but also Charles Schulz's son and grandson and the grandson's writing partner are the writers on it. So we've been guiding it along for quite a while, it's been almost two years now. Steve Martino from Blue Sky is directing it, and he and that team are so religious about wanting to keep it the way -- everything we loved about it."

"The Peanuts Movie" arrives in theaters Nov. 6.