The U.K. publisher of the Harry Potter series has unveiled the new cover for the third book in the series, Prisoner of Azkaban.

This new Prisoner of Azkaban cover depicts Harry casting his stag patronus to fight off dementors. We’re liking the blue theme this cover holds:

Bloomsbury has been slowly unveiling each new cover over the past couple months. The Chamber of Secrets cover (with Harry sporting strangely long hair) was released in late May, and the Philosopher’s Stone cover was revealed in March.

All seven Harry Potter books with their new covers illustrated by Jonny Duddle will be released September 1, 2014. Each book will include “highlights” from Pottermore at the end.

The wizarding series by J.K. Rowling has been refreshed with new covers several times over the years. Recently, Scholastic republished the Potter books with new covers aimed at children in the United States.