$ composer update phpunit/phpunit --with-dependencies Dependency "symfony/yaml" is also a root requirement, but is not explicitly whitelisted. Ignoring. Loading composer repositories with package information Updating dependencies (including require-dev) - Installing sebastian/global-state (1.1.1) Loading from cache - Installing doctrine/instantiator (1.0.5) Loading from cache - Removing phpunit/phpunit-mock-objects (2.1.5) - Installing phpunit/phpunit-mock-objects (2.3.8) Loading from cache - Removing phpunit/php-file-iterator (1.3.4) - Installing phpunit/php-file-iterator (1.4.2) Loading from cache - Installing phpdocumentor/reflection-docblock (2.0.4) Downloading: 100% - Installing phpspec/prophecy (v1.6.2) Loading from cache - Removing phpunit/phpunit (4.1.6) - Installing phpunit/phpunit (4.8.31) Downloading: 100% sebastian/global-state suggests installing ext-uopz (*) phpdocumentor/reflection-docblock suggests installing dflydev/markdown (~1.0) phpdocumentor/reflection-docblock suggests installing erusev/parsedown (~1.0) Writing lock file Generating autoload files > echo 'You MUST manually modify the clean-vendor-dir target in build/build.xml when adding or upgrading dependencies.' You MUST manually modify the clean-vendor-dir target in build/build.xml when adding or upgrading dependencies. PHPBB3-14947