Requirements terminal access and PHP 7.2 cli In the master branch only: Test 0 Skip this step, nothing to do, dear tester , integrators will deal with this. Verify that both phpunit and behat runs are installing and passing ok for master. Test 1 (better use composer >= 1.3, to avoid some time format differences) Open a terminal and navigate to your moodle root directory. Run php composer.phar update Open composer.lock on a text editor. You SHOULD find "name": "moodlehq/behat-extension", "version": "v3.39.1", with "url": "https://github.com/moodlehq/moodle-behat-extension.git", Back on your terminal, delete the " vendor " folder and " composer.lock ". Also remove composer caches. rm -rf vendor rm composer.lock php composer.phar clearcache Run again php composer.phar update Open composer.lock on a text editor You SHOULD find "name": "moodlehq/behat-extension", "version": "v3.39.1", with "url": "https://github.com/moodlehq/moodle-behat-extension.git", Note: the local run of composer update may lead to some other small differences ( git diff composer.lock ) if some dependency packages were updated the last hours @ packagist. They can be ignored, unless there is something really big detected.