Some customers were reporting issues while upgrading to the previous versions of Quay Enterprise. We worked with them to diagnose a root cause. The culmination of this work is our latest minor release, v1.13.3, which users should upgrade to if they're having issues upgrading to any of the previous v1.13 releases.
Quay Enterprise v1.13 contains long-running migrations and should be updated during a maintenance window where administrators will have several hours of time to dedicate to the database migrating. Quay Enterprise will not be available while these migrations run.