diff --git a/views/ngXosLib/package.json b/views/ngXosLib/package.json
index 9e13e28..8ae1e6e 100644
--- a/views/ngXosLib/package.json
+++ b/views/ngXosLib/package.json
@@ -8,14 +8,14 @@
     "apigen": "node xos-resource-generator.js",
     "swagger": "node xos-swagger-def.js",
     "apidoc": "jsdoc api/ng-xos.js api/ng-xoslib.js api/ng-hpcapi.js -d api/docs",
-    "build": "gulp vendor"
+    "build": "gulp vendor && gulp helpers"
   },
   "author": "Matteo Scandolo",
   "license": "ISC",
   "dependencies": {
     "bluebird": "^3.0.5",
     "chalk": "^1.1.1",
-    "concat": "^1.0.0",
+    "concat": "^2.0.0",
     "eslint": "^1.8.0",
     "eslint-plugin-angular": "linkmesrl/eslint-plugin-angular",
     "fetch-swagger-schema": "^0.1.2",
@@ -23,6 +23,7 @@
     "swagger-js-codegen": "^1.1.5"
   },
   "devDependencies": {
+    "babel-preset-es2015": "^6.6.0",
     "gulp": "^3.9.0",
     "gulp-angular-filesort": "^1.1.1",
     "gulp-concat": "^2.6.0",