diff --git a/.travis.yml b/.travis.yml
index 7ff6e1b536..6dd7df754d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -81,5 +81,6 @@ script:
     - if [[ ! $deps ]]; then echo -e "\\nRunning tests requiring tty"; $PHPUNIT --group tty; fi;
     - if [[ ! $deps && $TRAVIS_PHP_VERSION = ${MIN_PHP%.*} ]]; then echo -e "1\\n0" | xargs -I{} sh -c 'echo "\\nPHP --enable-sigchild enhanced={}" && ENHANCE_SIGCHLD={} php-$MIN_PHP/sapi/cli/php .phpunit/phpunit-4.8/phpunit --colors=always src/Symfony/Component/Process/'; fi;
     - if [[ $deps = high ]]; then echo "$COMPONENTS" | parallel --gnu -j10% 'cd {}; composer update --prefer-dist; $PHPUNIT --exclude-group tty,benchmark,intl-data'$LEGACY; fi;
+    - if [[ $deps = high ]]; then (cd src/Symfony/Bridge/PhpUnit && phpenv global 5.3 && php --version && $PHPUNIT && find -name '*.php' -not -path './vendor/*' | xargs -n1 php -l); fi;
     - if [[ $deps = low ]]; then echo "$COMPONENTS" | parallel --gnu -j10% 'cd {}; composer update --prefer-dist --prefer-lowest --prefer-stable; $PHPUNIT --exclude-group tty,benchmark,intl-data'; fi;
     - if [[ $deps = skip ]]; then echo This matrix line is skipped for pull requests.; fi;