Apple has confirmed that it plans to block iTunes and App Store payment information changes on old versions of iOS, OS X, and Apple TV Software.

As of June 30, those with really old devices could have trouble making purchases when their existing payment information expires. Apple says the change is to “ensure your financial data is protected when you make purchases.”

Apple confirmed the news in an email to customers who may be affected by the block. It’s unlikely too many people will be impacted due to how old the affected operating systems are, but it’s worth noting if you still have older devices in use.

iOS, OS X, and Apple TV are affected

“On June 30, 2018, Apple will implement changes to continue to ensure your financial data is protected when you make purchases on the iTunes Store or App Store,” reads the email obtained by MacRumors.

Apple confirms that iOS 4.3.5 or earlier, OS X 10.8.5 or earlier, and Apple TV Software 4.4.4 or earlier are affected.

“To be able to change your payment information with devices running the software listed above, you’ll need to update to a more recent software version,” Apple adds.

Of course, older devices may not be able to run a more recent software version, in which case you’ll either need to use another Apple device to update your payment information, or upgrade.

You will be able to continue to make purchases while your existing payment information is valid. But if your card expires, you change addresses, or anything else needs updating, you’re going to be out of luck.

Apple has published a new support document for this change for those who would like more information.