By Isabella Biedenharn
Updated June 12, 2015 at 02:44 PM EDT

Terry Pratchett’s daughter, Rhianna, has put a stop to rumors that she or anyone else will continue writing her father’s Discworld series, The Guardian reports. Rhianna, a writer for video games, film, TV, and comics, confirmed that The Shepherd’s Crown, Pratchett’s forthcoming novel starring a teenage witch named Tiffany Aching, will be the final Discworld novel.

When a fan asked whether Rhianna would continue the series herself, Rhianna responded: “No. I’ll work on adaptations, spin-offs, maybe tie-ins, but the books are sacred to Dad. That’s it. Discworld is his legacy. I shall make my own.”

Rhianna also said that Rob Wilkins, Pratchett’s assistant, would not write any Discworld books, and that an “unfinished writings compilation” was also “unlikely, sorry.”

The Shepherd’s Crown is the 41st Discworld novel, and will be published on September 1, 2015.