Home → Evergreen Upgrades → What to Expect and How to Prepare → 2025 Upgrade to Evergreen 3.15.3
Last Updated 08/26/2025
November 11, 2025
Current Version: 3.13.5
Target Version: 3.15.3
Over the Veterans Day holiday on November 11th, NC Cardinal will be having our annual Evergreen software upgrade. During this time, our Evergreen catalog will be completely offline.
During this process, any libraries that are open will need to use the Offline mode. Detailed instructions, including a video on Offline Mode, can be found in our Knowledge Books.
During the upgrade, users will still be able to authenticate to electronic resources, because we will be pointing our SIP authentication server at a backup copy of our database, but since our real database will be down, this means self check out machines should not be used during this time.
We will be upgrading from Evergreen version 3.13.5 to version 3.15.3. The full list of changes can be found in the release notes below.
Evergreen Version 3.14 Release Notes
Evergreen Version 3.15 Release Notes