diff --git a/.travis.yml b/.travis.yml
index 1ac8681d..f603f2c9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -42,9 +42,9 @@ before_install:
   - curl -OL https://squizlabs.github.io/PHP_CodeSniffer/phpcs.phar
 
 install:
-  - if [[ $setup = 'basic' ]];  then travis_retry composer install --no-interaction --prefer-dist; fi
-  - if [[ $setup = 'stable' ]]; then travis_retry composer update --no-interaction --prefer-dist --prefer-stable; fi
-  - if [[ $setup = 'lowest' ]]; then travis_retry composer update --no-interaction --prefer-dist --prefer-lowest --prefer-stable; fi
+  - if [[ $setup = 'basic' ]];  then travis_retry composer install --no-interaction --prefer-dist --with-all-dependencies; fi
+  - if [[ $setup = 'stable' ]]; then travis_retry composer update --no-interaction --prefer-dist --prefer-stable --with-all-dependencies; fi
+  - if [[ $setup = 'lowest' ]]; then travis_retry composer update --no-interaction --prefer-dist --prefer-lowest --prefer-stable --with-all-dependencies; fi
   - travis/install-nginx.sh
   - . $HOME/.nvm/nvm.sh
   - nvm install stable