Fight or Flight is the twenty-first Diary of a Wimpy Kid book by Jeff Kinney, out on 20 October 2026. Abrams lists it for ages 8–12.
What happens?
Greg Heffley thinks he has worked out how to survive middle school. In Fight or Flight, that know-how is put to the test, and Greg has to decide whether to stand his ground or back away.
What age is it for?
Abrams says 8–12, like the rest of the series. For the whole series, see the Wimpy Kid age guide.
Does the order matter?
Not much. Each book stands on its own, so a child can start here, though book 1 introduces Greg, Rowley and the family.
When is book 22?
It hasn’t been announced yet. Jeff Kinney’s books usually come out each autumn.
What to read next
See Books like Diary of a Wimpy Kid, or the Dork Diaries guide for a diary series with a girl at its centre.
Questions parents ask
What is the newest Wimpy Kid book?
Fight or Flight, book 21, out on 20 October 2026.
What age is Fight or Flight for?
Abrams lists it for ages 8–12, the same as the rest of the series.
When is the next Wimpy Kid book coming out?
Book 22 hasn’t been announced. New Wimpy Kid books have usually come out each autumn.
