GET A FREE DUNKIN' REFRESHERS DRINK: For today only, Aug. 3, Dunkin' Donuts is giving away 1 million free Refreshers drinks. Here's how to score your own free drink today.

It's hot out there. Cool off with a free drink thanks to Dunkin' Donuts. Here's how to cash in on the savings.

On Aug. 3, Dunkin' Donuts is giving away 1 million free Refresher drinks to Dunkin' Rewards members with a yet-to-be-released promo code. To get your free drink, you'll need to sign up for a free Dunkin' Rewards account and download the app. We don't yet know how or when Dunkin' will be dropping the promo code, but keep an eye on the brand's Instagram page.

Refreshers are a non-coffee Dunkin' treat. The current lineup includes mango pineapple and strawberry dragon fruit, both of which contain green tea and B vitamins.

If you're in the mood for a free treat, be sure you're signed up for a Dunkin' Rewards membership and keep an eye on the Dunkin' Instagram account. Get ready for fast fingers once the promo code drops today.

Lauren Allain is a freelance journalist covering deals at Mashable. She graduated from Western Washington University with a B.A. in journalism and holds an M.B.A from Webster Leiden. You can find more of her work online from publications including Reader’s Digest, U.S. News & World Report, Seattle Refined, and more. When she’s not writing, Lauren prefers to be outside hiking, bouldering, swimming, or searching for the perfect location for all three.