Amazon’s Kindle for iOS app got an update today to prepare for iOS 7’s upcoming release. According to the change log, the update is required before users update to iOS 7. Failure to install the new version of the app prior to updating to iOS 7 could cause users to have to login again and re-download their books.

While this issue isn’t as signficant as losing all of your Google Authenticator tokens, it could be a bit of an annoyance for users to have to re-download their reading material.

The Kindle update is available on the App Store now.