have bower use specific moment version

bower.json

@@ -2,7 +2,7 @@
   "name": "fullcalendar",
   "version": "2.0.0-beta2",
   "devDependencies": {
-    "moment": ">=2.5.0",
+    "moment": "2.5.1",
     "jquery": "~1.10.2",
     "jquery-ui": "~1.10.3",
     "jquery-simulate": "*",