diff --git a/package.json b/package.json
index a690b6b..5b00c24 100644
--- a/package.json
+++ b/package.json
@@ -33,10 +33,6 @@
     "@aureooms/js-int32": "^3.0.0",
     "@aureooms/js-random": "^2.0.0",
     "ava": "^3.7.1",
-    "babel-cli": "^6.24.1",
-    "babel-polyfill": "^6.23.0",
-    "babel-preset-latest": "^6.24.1",
-    "codeclimate-test-reporter": "^0.5.0",
     "coveralls": "^2.13.1",
     "esdoc": "^1.1.0",
     "nyc": "^11.0.3",