diff --git a/package.json b/package.json
index fb5238c..39221b0 100644
--- a/package.json
+++ b/package.json
@@ -56,7 +56,7 @@
     "gulp-uglify": "^1.2.0",
     "gulp-util": "^3.0.6",
     "jsdom": "^3.1.2",
-    "karma": "^0.13.2",
+    "karma": "^0.12.37",
     "karma-chai": "^0.1.0",
     "karma-chrome-launcher": "^0.2.0",
     "karma-firefox-launcher": "^0.1.6",