diff --git a/packages/babel-preset-es2015/index.js b/packages/babel-preset-es2015/index.js
index f8fdb617e4..d9b84f65d1 100644
--- a/packages/babel-preset-es2015/index.js
+++ b/packages/babel-preset-es2015/index.js
@@ -8,6 +8,7 @@ module.exports = {
     require("babel-plugin-transform-es2015-classes"),
     require("babel-plugin-transform-es2015-object-super"),
     require("babel-plugin-transform-es2015-shorthand-properties"),
+    require("babel-plugin-transform-es2015-duplicate-keys"),
     require("babel-plugin-transform-es2015-computed-properties"),
     require("babel-plugin-transform-es2015-for-of"),
     require("babel-plugin-transform-es2015-sticky-regex"),
diff --git a/packages/babel-preset-es2015/package.json b/packages/babel-preset-es2015/package.json
index 3abbd0bfce..5a8c0a0be5 100644
--- a/packages/babel-preset-es2015/package.json
+++ b/packages/babel-preset-es2015/package.json
@@ -17,6 +17,7 @@
     "babel-plugin-transform-es2015-object-super": "^6.3.13",
     "babel-plugin-transform-es2015-shorthand-properties": "^6.3.13",
     "babel-plugin-transform-es2015-computed-properties": "^6.3.13",
+    "babel-plugin-transform-es2015-duplicate-keys": "^6.4.0",
     "babel-plugin-transform-es2015-for-of": "^6.3.13",
     "babel-plugin-transform-es2015-sticky-regex": "^6.3.13",
     "babel-plugin-transform-es2015-unicode-regex": "^6.3.13",