diff --git a/.travis.yml b/.travis.yml
index 00b2518..e6a60e4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,5 +4,8 @@ cache:
   directories:
     - $HOME/.cache/composer
 
+install:
+  - composer install
+
 script:
   - vendor/bin/xmllint ./Standards/