PostgreSQL 11 community support ends on 9 November 2023. Azure Database for PostgreSQL - Hyperscale (Citus) cluster running on PostgreSQL 11 will need to upgrade to a higher PostgreSQL version by that date to avoid risks running on an unsupported PostgreSQL version.
Action required
To avoid any disruption to your workloads and avoid risks running on an unsupported PostgreSQL version, upgrade your Azure Database for PostgreSQL - Hyperscale (Citus) clusters that use PostgreSQL 11 to a higher PostgreSQL version by 9 November 2023.
More information
See information about PostgreSQL versioning policy here.
See information about in-place major PostgreSQL version upgrades in Hyperscale (Citus) here.