diff --git a/.travis.yml b/.travis.yml
index 0291778..cf31b0a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,8 +12,7 @@ addons:
     - google-chrome-stable
 before_script:
 - npm install web-component-tester
-- npm install bower
-- export PATH=$PWD/node_modules/.bin:$PATH
+- npm install -g bower
 - bower install
 script:
 - xvfb-run wct --skip-plugin sauce
diff --git a/bower.json b/bower.json
index 0383299..754d1d4 100644
--- a/bower.json
+++ b/bower.json
@@ -25,6 +25,6 @@
   },
   "devDependencies": {
     "iron-component-page": "PolymerElements/iron-component-page#^1.0.0",
-    "web-component-tester": "Polymer/web-component-tester#^3.4.2"
+    "web-component-tester": "Polymer/web-component-tester#^4.2.2"
   }
 }