diff --git a/package.json b/package.json
index ea8ab8c..faeb6a9 100644
--- a/package.json
+++ b/package.json
@@ -13,6 +13,7 @@
     "@types/node-fetch": "^2.5.8",
     "@vercel/node": "^1.7.4",
     "typescript": "^4.1.5",
+    "vercel": "^21.2.3",
     "vuepress": "^1.5.0"
   },
   "dependencies": {