diff --git a/package.json b/package.json
index 4a7177a..5d1b271 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "deprecate": "^0.1.0",
     "lodash": "^4.13.1",
     "query-string": "^4.1.0",
-    "xml2js": "^0.4.16"
+    "xml2js": "^0.5.0"
   },
   "description": "NodeJS implement of CAS(Central Authentication Service) client.",
   "devDependencies": {