diff --git a/ca-store-generator.js b/ca-store-generator.js
index 11e4d33..4d2c173 100644
--- a/ca-store-generator.js
+++ b/ca-store-generator.js
@@ -181,7 +181,7 @@ function dumpCerts(certs, filename, pemsDir) {
 }
 
 function run(filename) {
-  var PromiseA = require('es6-promise').Promise;
+  var PromiseA = require('bluebird').Promise;
 
   return new PromiseA(function (resolve, reject) {
     if (!filename) {
diff --git a/package.json b/package.json
index 571e97a..bbfbcc9 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
   },
   "homepage": "https://github.com/coolaj86/node-ssl-root-cas",
   "dependencies": {
-    "es6-promise": "^3.2.1",
+    "bluebird": "^3.4.1",
     "request": "^2.47.0"
   }
 }