diff --git a/package.json b/package.json
index be0a385..4925d42 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
   "devDependencies": {
     "babel-cli": "^6.10.1",
     "babel-core": "^6.9.1",
-    "babel-preset-es2015": "^6.9.0",
+    "babel-preset-es2015": "^6.24.0",
     "babel-tape-runner": "^2.0.1",
     "babelify": "^7.3.0",
     "browserify": "^13.0.1",