Amazon Aurora supports PostgreSQL 16.2, 15.6, 14.11, 13.14, and 12.18

Amazon Aurora PostgreSQL-Compatible Edition now supports PostgreSQL versions 16.2, 15.6, 14.11, 13.14, and 12.18. These releases contain product improvements and bug fixes made by the PostgreSQL community, along with Aurora-specific improvements. These releases also offer improved performance through faster COPY operations (for PostgreSQL 16.2), Query Plan Management enhancements for queries with aggregate operations, and optimizations for further reducing the logical replication lag. 

Source:: Amazon AWS