The Postal Service raised stamp prices Sunday as part of a 10-year plan to stabilize finances and modernize operations.

The cost of postal stamps increased by 5 cents on July 13, marking the sixth time the U.S. Postal Service has increased stamp prices since January 2021.

USPS increases forever stamp prices from 73 to 78 cents effective this weekend. Postcards, letters also affected as postal service seeks financial stability.