Taking a firm stance against tech companies’ unlicensed use of its authors’ works, the publishing giant Penguin Random House will change the language on all of its books’ copyright pages to expressly prohibit their use in training artificial intelligence systems, according to reporting by The Bookseller.

Penguin Random House, the trade publisher, is adding language to the copyright pages of its books to prohibit the use of those books to train AI. The

The publishing giant called on a recent EU directive that clarifies copyright holders' rights in the face of data usage by AI firms.

PRH's changing of its copyright wording to combat AI training makes it the first of the Big Five publishers to take such an action against AI, at least publicly. Mashable has reached out to the remaining Big Five trade publishers — Hachette, HarperCollins, Macmillan, and Simon & Schuster — for comment.

The copyright page on new books and reprints now says they can’t be used or reproduced ‘for the purpose of training artificial intelligence.’