Pizza Hut's iconic Book It! reading program — which is celebrating its 40th anniversary this year — is making its long-awaited return to stores nationwide. In addition, Pizza Hut and Book It! will be giving away 1 million personal pan pizzas throughout October, which is National Book Month, as per Stacey Leasca with "Food & Wine. "

Sometime in 1984, Pizza Hut launched its own reading program called Book It! The idea was to encourage school-age kids to read books and earn free pizza.

To participate, just use the promo code “BOOKIT40” when ordering from Pizza Hut online or on the app to snag a free 6-inch pizza with any purchase of $8 or more. The deal will last all of October or until one million pizzas are redeemed.

For National Book Month in October, Pizza Hut is giving away one million free Personal Pan Pizzas. Also: get a $23.99 two pizza and breadstick combo.

Considered one of the most successful fast food brands worldwide, Pizza Hut’s claim to fame goes beyond its signature pies. The brand is also committed to customer-serving collaborations such as its newest promotion for National Book Month.

Great news for bookworms and pizza lovers alike! In honor of National Book Month, Pizza Hut is giving away a whopping 1 million free pizzas. This promotion is also part of the 40th-anniversary celebration of the pizza chain’s BOOK IT!

In 1984, the company began offering youth across the country incentives to read books, giving away more than 1.5 billion personal pan pizzas along the way.