diff --git a/package.json b/package.json
index a8b8a732..cae030f5 100644
--- a/package.json
+++ b/package.json
@@ -72,6 +72,7 @@
     "karma-jspm": "^2.0.2",
     "karma-mocha": "^0.2.1",
     "karma-mocha-reporter": "^1.1.3",
+    "karma-phantomjs-shim": "^1.1.2",
     "karma-phantomjs2-launcher": "^0.3.2",
     "karma-sinon": "^1.0.4",
     "mocha": "^2.3.4",