diff --git a/package.json b/package.json
index 8f1faac2..4570ff5d 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
     "http-proxy": "~1.1.4",
     "js-yaml": "~3.0.2",
     "request": "~2.36.0",
-    "sitemap": "~0.7.3"
+    "sitemap": "~0.9.0"
   },
   "main": "dist/ng-token-auth.js",
   "npmName": "ng-token-auth",