diff --git a/package.json b/package.json
index aba9d13..ddc325d 100644
--- a/package.json
+++ b/package.json
@@ -64,12 +64,14 @@
     "karma": "^1.1.0",
     "karma-mocha": "^1.0.0",
     "karma-nyan-reporter": "^0.2.3",
+    "karma-phantomjs-launcher": "*",
     "karma-sinon": "^1.0.4",
     "karma-sourcemap-loader": "*",
     "karma-webpack": "^1.5.1",
     "loader-utils": "^0.2.15",
     "mocha": "^3.0.2",
     "node-sass": "^3.4.2",
+    "phantomjs-prebuilt": "^2.0.0",
     "postcss-import": "^8.1.2",
     "postcss-loader": "^0.9.0",
     "postcss-scss": "^0.1.8",