High school seniors were cheated out of their graduation ceremonies and proms by the pandemic, but there’s no stopping a classic pizza party, thanks to a special offer by Pizza Hut.

In partnership with Dairy Management, an organization representing America’s dairy farmers, the nation’s No. 2 pizza restaurant chain gave away 500,000 pizzas to graduating seniors in the class of 2020.

“Our brand has a long history of celebrating moments that matter—like graduations—and Pizza Hut takes pride in being a part of our customers’ big days,” said George Felix, Pizza Hut’s chief marketing officer, in a statement. “So it’s only natural that we’d be there for students and their families to help celebrate the accomplishments of the graduating class of 2020.”

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Students registered for their free medium one-topping pizza online. To qualify, they were required to sign up for Pizza Hut’s Hut Rewards loyalty program.

The promotion was slated to run through May 28, but all 500,000 coupons have already been claimed, according to Pizza Hut’s website.

Other brands have stepped forward to show their support for the class of 2020, including Krispy Kreme, which gave away a “Graduation Dozen” donuts to both graduating high school and college seniors. Additionally, former President Barack Obama delivered a nationally televised commencement speech in their honor earlier in May.