Amazon Aurora supports PostgreSQL 13

Amazon Aurora PostgreSQL-Compatible Edition now supports PostgreSQL major version 13. PostgreSQL 13 includes improved functionality and performance from enhancements such as de-duplication of B-tree index entries, improved performance for queries that use partitioned tables, incremental sorting to accelerate data sorts, parallel processing of indexes with the VACUUM command, more ways to monitor activity within a PostgreSQL database, new security capabilities, and more. This release also adds support for bool_plperl, which simplifies writing Perl procedures.

Source:: Amazon AWS