diff --git a/package.json b/package.json
index 25ec437..961834e 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
   "license": "MIT",
   "devDependencies": {
     "@types/node": "^22.0.0",
-    "fastify": "^4.6.0",
+    "fastify": "^5.1.0",
     "husky": "^9.0.11",
     "proxyquire": "^2.1.3",
     "snazzy": "^9.0.0",