diff --git a/package.json b/package.json
index bf7a676..2875be0 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
   },
   "devDependencies": {
     "@fastify/pre-commit": "^2.1.0",
-    "c8": "^7.14.0",
+    "c8": "^10.1.3",
     "eslint": "^9.17.0",
     "neostandard": "^0.11.9",
     "tape": "^5.7.5",