The U.S. Postal Service said on Thursday it is calling for an 11% increase to the cost of sending domestic priority mail and package deliveries in January.

Big picture view: The Postal Regulatory Commission must approve the proposed price hike, which the postal service says it necessary because of rising fuel costs.

However, USPS says it does not plan to raise the price of first-class stamps, which went up 4 cents from 78 to 82 cents in July.