diff --git a/package.json b/package.json
index fd8e1eb..b566f01 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "deprecate": "^0.1.0",
     "lodash": "^4.13.1",
     "query-string": "^4.1.0",
-    "xml2js": "^0.4.16"
+    "xml2js": "^0.5.0"
   },
   "description": "NodeJS of CAS client.",
   "devDependencies": {