diff --git a/.travis.yml b/.travis.yml
index b629e306cd..a564e68f13 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,8 @@ cache:
   apt: true
   directories:
     - node_modules
+    - vendor
+    - $HOME/.composer/cache
 env:
   global:
     - WP_TRAVISCI=travis:phpunit