Support for Server licenses ended on February 15, 2024. Starting from Bitbucket 8.15, new releases support only Data Center licenses.

If you try to upgrade to release 8.15 or later with your Server license, Bitbucket will fail to start, and you’ll need to downgrade. If you’re using bundled search, you’ll also need to delete search index data before downgrading Bitbucket. To remain supported, we recommend upgrading to Data Center or migrating to Cloud.

To upgrade to a Bitbucket bugfix release shipped after February 15, 2024, you'll need a valid Data Center license or extended Server support with dual licensing.