diff --git a/package.json b/package.json
index 3d42759..980d2d8 100644
--- a/package.json
+++ b/package.json
@@ -3,11 +3,14 @@
   "version": "0.2.6",
   "amdName": "tinytime",
   "main": "dist/tinytime.js",
+  "module": "dist/tinytime.es.js",
+  "jsnext:main": "dist/tinytime.es.js",
   "umd:main": "dist/tinytime.umd.js",
   "license": "MIT",
   "scripts": {
-    "rollup:cjs": "NODE_ENV=production rollup -c rollup.config.js -m -f cjs -n $npm_package_amdName $npm_package_jsnext_main -o $npm_package_main",
-    "rollup:umd": "NODE_ENV=production rollup -c rollup.config.js -m -f umd -n $npm_package_amdName $npm_package_jsnext_main -o dist/tinytime.umd.js",
+    "rollup:cjs": "NODE_ENV=production rollup -c rollup.config.js -m -f cjs -n $npm_package_amdName -o $npm_package_main",
+    "rollup:es": "NODE_ENV=production rollup -c rollup.config.js -m -f es -n $npm_package_amdName -o $npm_package_module",
+    "rollup:umd": "NODE_ENV=production rollup -c rollup.config.js -m -f umd -n $npm_package_amdName -o $npm_package_umd_main",
     "rollup": "npm run rollup:cjs && npm run rollup:umd",
     "minify": "make uglify",
     "build": "npm run rollup && npm run minify && gzip-size dist/tinytime.js | pretty-bytes",