To celebrate a Week of Cheers, Starbucks (SBUX) is offering customers a free drink when they take a ride with Uber. The BOGO drink offer at Starbucks runs until Sunday, allowing you to share a drink with your best friend or family member.

To get your free drink simply take a ride with Uber and you will receive a coupon to redeem for a buy one drink, get one free drink at Starbucks. The coupon is redeemable for any handcrafted beverage from participating locations of the coffee chain after 2 p.m.

To make the day of your Uber driver even more cheerful, riders are encouraged to leave a tip to help them earn Starbucks eGift Cards as a special thank you for their service. If an Uber driver earns five to nine tips, they will receive a $5 gift card, 10 to 19 tips a $10 gift card and 20 or more tips a $20 gift card will be awarded.

Both Starbucks and Uber are offering the deal because they said they “want you to share a moment—and a beverage—with those who are most important to you.”

There is a maximum of three redeemable drink offers per person, and only one coupon can be used per visit. Coupon applies to a free drink of equal or lesser value. Only one coupon can be earned per day, according to the company.

As of this afternoon, Starbucks shares were down about 1 percent.