Netflix has purchased the entire catalog of author Roald Dahl in its latest content deal. The deal, which began three years ago, allows Netflix to create animated and live-action series and movies based on Dahl’s books like Matilda, The BFG, Fantastic Mr. Fox, Willy Wonka and more. Netflix won’t say how much it paid for Dahl’s catalog but it’s rumored to be the streaming giant’s biggest purchase yet. The company’s already working on a series based on Charlie and The Chocolate Factory and a movie based on Matilda: The Musical.