Why is Timber using such an old version of Twig?

@gutterboy333 we distribute the WP.org version to work with PHP 5.6. Unfortunately that means we have to use Twig 1.x.

HOWEVER, you can use Twig 2.x by installing through Composer!
https://packagist.org/packages/timber/timber

@gutterboy333 it’s a whole different workflow outside of the WordPress plugin repo. You manage/update through Composer — not the WP plugin dashboard.

With Composer/Packagist it becomes a theme dependency that lives inside your project’s /vendor directory. Here’s a setup guide from Timber:

https://timber.github.io/docs/getting-started/setup/