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How often is the AP Stylebook updated?

The spiral-bound AP Stylebook is updated and published every other year, in late May, right after Memorial Day.

The perfect-bound paperback AP Stylebook is published by Basic Books. They produce their edition every other year, as well.

AP Stylebook digital services are updated throughout the year as style changes and updates are made. AP Stylebook Online subscribers can receive email alerts as changes and new entries are made to the Stylebook.