diff --git a/package.json b/package.json
index 1e84516..e5847e7 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "rimraf": "2"
   },
   "devDependencies": {
-    "bluebird": "2",
+    "bluebird": "3.1.3",
     "mocha": "2",
     "istanbul": "0"
   },