diff --git a/src/rollup.js b/src/rollup.js
index 4829d23..0b75d2e 100644
--- a/src/rollup.js
+++ b/src/rollup.js
@@ -1,3 +1,4 @@
+import Promise from 'es6-promise/lib/es6-promise/promise.js';
 import { basename } from './utils/path.js';
 import { writeFile } from './utils/fs.js';
 import { keys } from './utils/object.js';