The price of postage is set to go up next week.

Starting on Sunday, officials with the US Postal Service say first class stamps will go up to 49 cents per stamp. That’s up from the current price of 46 cents per stamp. The increase would be the largest such increase in more than a decade.

On an additional note, the price of stamps for postcards will go up to 34 cents and the fee for each additional ounce of weight in a letter or package will be 21 cents starting on Sunday.