diff --git a/package.json b/package.json
index 648e5e5..850220f 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
   "devDependencies": {
     "@types/connect": "^3.4.38",
     "@types/node": "^26.0.0",
-    "c8": "^11.0.0",
+    "c8": "^12.0.0",
     "cors": "^2.8.5",
     "eslint": "^9.17.0",
     "fastify": "^5.0.0",