This chapter on the manual page shows the actual Version is 1.35
but claims that all Versions starting with 1.36 will need to upgrade step by step.
Thanks for help
MediaWiki 1.35 requires:
- PHP 7.3.19+
- One of the following:
- MySQL 5.5.8+ (or equivalent MariaDB)
- PostgreSQL 9.2+
- SQLite 3.8+
Since Version 1.36, MediaWiki only commits to supporting upgrades from two LTS releases ago (see phab:T259771). Upgrades from older versions of MediaWiki will have to be performed in multiple steps..
If you are using PostgreSQL, please also read Manual:Upgrading Postgres.