Newer versions of Amazon Aurora PostgreSQL-compatible edition are now available and database cluster(s) running Aurora PostgreSQL minor versions 11.13, 11.14, 11.15, 12.8, 12.10, 13.4, 13.5, and 13.6 need to be upgraded by September 15, 2023.
Newer versions of Amazon Aurora PostgreSQL-compatible edition are now available and database cluster(s) running Aurora PostgreSQL minor versions 11.13, 11.14, 11.15, 12.8, 12.10, 13.4, 13.5, and 13.6 need to be upgraded by September 15, 2023. These newer minor versions include important updates that will improve the operations of your Aurora PostgreSQL instances and workloads. We strongly encourage you to upgrade to at least a recommended minimum minor version at your earliest convenience.
- For PostgreSQL Minor Version 11.13, 11.14, and 11.15, the recommended minimum minor version is 11.18.
- For PostgreSQL Minor Version 12.8 and 12.10, the recommended minimum minor version is 12.13.
- For PostgreSQL Minor Version 13.4, 13.5 and 13.6, the recommended minimum minor version is 13.9.
Starting on or after 12:00 PM PDT on September 15, 2023, if your Amazon Aurora PostgreSQL cluster has not been upgraded to a newer minor version, we will schedule the relevant recommended minimum minor version to be automatically applied during your next maintenance window. Changes will apply to your cluster during your next maintenance window even if auto minor version upgrade is disabled.
Restoration of Amazon Aurora PostgreSQL 11.13, 11.14, 11.15, 12.8, 12.10, 13.4, 13.5, and 13.6 database snapshots after September 15, 2023 will result in an automatic upgrade of the restored database to a supported version at the time.
How to Determine Which Instances are Running These Minor Versions?
- In the Amazon RDS console, you can see details about a database cluster, including the Aurora PostgreSQL version of instances in the cluster, by choosing Databases from the console's navigation pane.
- To view DB cluster information by using the AWS CLI, use the describe-db-clusters command.
- To view DB cluster information using the Amazon RDS API, use the DescribeDBClusters operation. You can also query a database directly to get the version number by querying the aurora_version() system function i.e., "SELECT * FROM aurora_version();".
How to Apply a New Minor Version
You can apply a new minor version in the AWS Management Console, via the AWS CLI, or via the RDS API. Customers using CloudFormation are advised to apply updates in CloudFormation. We advise you to take a manual snapshot before upgrading. For detailed upgrade procedures, please see the available User Guide . Please be aware that your cluster will experience a short period of downtime when the update is applied.
Visit the Aurora Version Policy  and the documentation  for more information and detailed release notes about minor versions, including existing supported versions.
If you have any questions or concerns, the AWS Support Team is available on AWS re:Post and via Premium Support .