diff --git a/examples/with-next-sitemap/package.json b/examples/with-next-sitemap/package.json
index 3eabaec079718..a31447348f9d4 100644
--- a/examples/with-next-sitemap/package.json
+++ b/examples/with-next-sitemap/package.json
@@ -16,6 +16,7 @@
   "devDependencies": {
     "@types/node": "14.6.0",
     "@types/react": "^16.9.45",
-    "next-sitemap": "latest"
+    "next-sitemap": "latest",
+    "typescript": "^4.3.2"
   }
 }