diff --git a/.travis.yml b/.travis.yml
index ec68ea1..a69d5a2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,7 @@ addons:
 cache:
   directories:
   - node_modules
+  - "$HOME/.cache/bower"
 before_script:
 - npm install web-component-tester bower polylint
 - bower install