Buy an iced coffee at Dunkin’ Donuts on May 25 – which the company has dubbed Maine Iced Coffee Day – and the Dunkin’ Donuts Business Owners of Maine will donate $1 to the Barbara Bush Children’s Hospital at Maine Medical Center.

It’s the same deal that’s been offered every Maine Iced Coffee Day for the past four years, and so far the event has raised more than $180,000 for the hospital’s teacher program, which helps school-aged patients stay connected with their classmates, teachers and schoolwork. Dunkin’ Donuts has pledged to raise $250,000 over a five-year period to permanently endow the program, which is intended to help give the children a sense of normalcy while they are in the hospital.

To donate, buy any size or flavor of iced coffee at Dunkin’ Donuts on May 25.