Krispy Kreme is doubling its free doughnut offer for people who are vaccinated against Covid-19, now offering them two free doughnuts a day from August 30th until September 5th.  The promotion comes after the Food and Drug Administration gave full approval to the Pfizer vaccine.

Starting in March, Krispy Kreme has been offering a free doughnut a day for the rest of the year to people who are vaccinated as a way to encourage getting the shots. The chain said it’s given away more than 2.5 million doughnuts through the deal so far.

Customers need to show their vaccination card to get free doughnuts.