diff --git a/examples/custom-server-fastify/package.json b/examples/custom-server-fastify/package.json
index 4842b59849db08..3f90af05ffb886 100644
--- a/examples/custom-server-fastify/package.json
+++ b/examples/custom-server-fastify/package.json
@@ -7,7 +7,7 @@
   },
   "dependencies": {
     "cross-env": "^7.0.2",
-    "fastify": "^3.19.1",
+    "fastify": "^5.7.3",
     "next": "latest",
     "react": "^17.0.2",
     "react-dom": "^17.0.2"