Brian K. Vaughan and Niko Henrichon’s gut-wrenching graphic novel Pride of Baghdad is getting the anniversary treatment it deserves. Image Comics is releasing a new hardcover edition this September, complete with hand-painted wraparound cover art by Henrichon and a fresh afterword from Vaughan.

The book first dropped under DC’s Vertigo imprint in 2006 and immediately became a modern classic. Based on real events, it follows four lions who escaped from the Baghdad Zoo during the 2003 American invasion of Iraq. The story tackles themes that hit just as hard today: freedom versus safety, lost innocence, and the cost of war.

“Twenty years later, I’m as proud of this book as I am depressed by how relevant it remains,” Vaughan said.

Pride of Baghdad earned spots on ALA’s “Great Graphic Novels for Teens” list and was named Best Original Graphic Novel by IGN. The New York Times, LA Times, and Publishers Weekly all gave it glowing reviews. Variety called it proof that Vaughan was “one of the best writers to grace the medium.”

Comic shops will get an exclusive edition featuring the original cover art. The standard hardcover hits shops September 23 and bookstores October 20. For English teachers who’ve been assigning dog-eared copies for two decades, this edition’s a gift.