diff --git a/package.json b/package.json
index 8a8e44a..4000ccf 100644
--- a/package.json
+++ b/package.json
@@ -11,5 +11,8 @@
     "url": "git@git.daplie.com:Daplie/dns-suite.git"
   },
   "author": "",
-  "license": "(MIT or Apache2)"
+  "license": "(MIT or Apache2)",
+  "developmentDependencies": {
+    "bluebird": "^3.5.0"
+  }
 }