# Requirements

> System requirements for the Cronjob module

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- webtrees 2.2.x (PHP 8.3+)
- PHP CLI with [`proc_open`](https://www.php.net/manual/en/function.proc-open.php) available (standard)
- A trigger: classic cron, a systemd timer, a Windows Task Scheduler task, **or** the built-in watch daemon (no OS timer needed — see "Trigger installation")