diff --git a/package.json b/package.json
index 1299f7c..e01a062 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
   },
   "devDependencies": {
     "@types/node": "^20.8.6",
-    "c8": "^8.0.1",
+    "c8": "^9.0.0",
     "fastify": "^4.24.2",
     "husky": "^8.0.3",
     "snazzy": "^9.0.0",