Amazon RDS for PostgreSQL supports minor versions 18.4, 17.10, 16.14, 15.18, and 14.23

Amazon Relational Database Service (RDS) for PostgreSQL now supports the latest minor versions 18.4, 17.10, 16.14, 15.18, and 14.23. We recommend that you upgrade to the latest minor versions to fix known security vulnerabilities in prior versions of PostgreSQL, and to benefit from the bug fixes and improvements added by the PostgreSQL community. This release also adds postgis_topology support in PostGIS 3.6.3 for PostgreSQL 18, enabling you to model and query topological relationships such as network connectivity and spatial adjacency directly in your databases.