diff --git a/.travis.yml b/.travis.yml
index cef9dc9..3831be1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,8 @@
 language: php
 
 before_script:
-    - composer install --prefer-source
+  - composer self-update
+  - composer install --no-interaction --prefer-source --dev
 
 php:
   - 5.3.3