diff --git a/.travis.yml b/.travis.yml
index a68ad96a4..8e2c7321a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,6 @@ env:
   - DB_USER=root
 
 before_script:
-  - composer install --prefer-dist
+  - composer install --prefer-dist --dev
   - sh -c "mysql -u$DB_USER -e 'SET FOREIGN_KEY_CHECKS = 0; DROP DATABASE IF EXISTS thelia;SET FOREIGN_KEY_CHECKS = 1;'; fi"
   - php Thelia thelia:install --db_host=localhost --db_username=$DB_USER --db_name=thelia