You may want to stock up on stamps if you plan to send mail soon, as the price of Forever stamps is increasing in just a few weeks.

The price of a Forever stamp jumps to 78 cents on July 13. If you still use snail mail, now’s the time to stock up and save. Here’s what to know about the latest USPS price hike.

Effective July 13, the price of a Forever Stamp, designed to be used in perpetuity, regardless of future increases, will increase from 73 cents to 78 cents.