diff --git a/package.json b/package.json
index f30230e..6786544 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "ava": "^0.18.2",
     "babel-cli": "^6.23.0",
     "babel-polyfill": "^6.23.0",
-    "babel-preset-env": "^1.1.8",
+    "babel-preset-env": "^1.1.9",
     "codeclimate-test-reporter": "^0.4.1",
     "coveralls": "^2.11.16",
     "esdoc": "^0.5.2",