The inaugural MLS seasons for Charlotte, Sacramento Republic FC, and St. Louis will be pushed back one year as a result of the COVID-19 pandemic.
Charlotte will make its debut in 2022, with Sacramento and St. Louis now scheduled for 2023 debuts.
Austin FC are still set to debut in 2021.
"We have always taken a thoughtful and strategic approach to our expansion planning and have delivered successful launches for every new club. It is important for each club to take the necessary time to launch their inaugural MLS seasons the way their fans and communities deserve. With the extra year to make up for what has been a challenging 2020, these teams will be well-positioned for their debuts and for long-term success," said MLS commissioner Don Garber in a statement.