diff --git a/package.json b/package.json
index 36869b5..0034f7f 100644
--- a/package.json
+++ b/package.json
@@ -31,11 +31,9 @@
     "min": "uglifyjs dist/blob-util.js -mc > dist/blob-util.min.js"
   },
   "devDependencies": {
-    "browserify-transform-cli": "^1.1.1",
     "bundle-collapser": "^1.1.4",
     "chai": "~1.8.1",
     "chai-as-promised": "~4.1.0",
-    "es3ify": "^0.1.3",
     "istanbul": "^0.2.7",
     "jshint": "~2.3.0",
     "mkdirp": "^0.5.0",