diff --git a/package.json b/package.json
index 2de56cd..4af05dc 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
   },
   "license": "MIT",
   "dependencies": {
-    "bluebird": "^2.10.0",
+    "bluebird": "^3.4.7",
     "graphlib": "^1.0.7",
     "lodash": "^3.10.1"
   }