WASHINGTON (AP) — The Internal Revenue Service has a message for taxpayers eager to learn the status of their tax refund: Please don’t check the IRS website every five minutes — once a day is enough.

The IRS says its “Where’s my refund?” website and smartphone app are being overwhelmed by eager taxpayers. The agency says its systems are only updated once a day, usually overnight, and the same information is available on the website, the IRS2go smartphone app and IRS toll-free phone lines.