Just in time for the fall season, Panera and American Express are offering card members complimentary drinks with unlimited refills through Panera’s Unlimited Sip Club.

Starting now through December 31, enrolled new and existing American Express US Consumer & Corporate Card Members will get a complimentary, four-month subscription to Panera’s Unlimited Sip Club – the first-ever nationwide unlimited beverage subscription for all self-serve beverages.

Panera’s subscription plan includes any sized drip hot coffee, iced coffee, hot tea, iced tea, fountain beverage or Charged Lemonade once every two hours, with unlimited refills while in the café.

The perk expands on last year’s offer, which allowed Card Members to enroll in a complimentary, six-month subscription to MyPanera+ Coffee (now Unlimited Sip Club), with a limited selection of hot tea, and hot or iced coffee.

To be eligible for this offer, customers must be located in the US, have a US American Express Card, be a MyPanera member at least 18 years or older and must not be a current Unlimited Sip Club subscriber at the time of redeeming the offer. After signing up for a subscription, eligible card Members will receive a four-month free trial for Unlimited Sip Club. As a US American Express Card Member, customers will not be charged for a subscription during their trial, but after their trial concludes, they will be charged $11.99+tax for the first month subscription and will continue to be charged at that rate unless they cancel their subscription.