PostgreSQL 13 Upgrade

Hi all,   We have a PostgreSQL 13 Upgrade planned for production next week. Test and Acceptance are already done (status is succeeded), but when looking in the environment details the database version still says PostgreSQL 9.6.19. I would expect there to be 13.x.y. How can I check if the upgrade is really done and if everything still works? This to feel comfortable for the production upgrade.   Thanks for your reactions.
1 answers

Same here. After the upgrade message still states 9.6, and only after a manual restart it says 13.4. But I would expect the database to already be on 13.4 after the maintenance upgrade, right? Maybe just an attribute that isn't updated on maintenance restart?