Open Newbury Street last July. (Jeremiah Robinson/City of Boston) Boston's series of car-free block parties is returning this summer and fall — with a few schedule and location changes.

Newbury Street will be pedestrian-only on Sunday, Dec. 1 and Dec. 8 for Open Newbury: Holiday Stroll, Mayor Michelle Wu’s office said Friday. Dec. 15 is set as a makeup date in case of bad weather.

Boston businesses and shoppers can take advantage of a winter Open Newbury Street for the very first time. “Open Newbury: Holiday Stroll” will occur on Sunday, Dec. 1 and Sunday, Dec. 8. A ...