diff --git a/package.json b/package.json
index dbc0bc32..9153e4a6 100644
--- a/package.json
+++ b/package.json
@@ -65,7 +65,7 @@
     "@fastify/autoload": "^6.0.0",
     "@fastify/sensible": "^6.0.0",
     "@types/node": "^26.0.0",
-    "c8": "^11.0.0",
+    "c8": "^12.0.0",
     "concurrently": "^10.0.1",
     "cross-env": "^10.0.0",
     "eslint": "^9.17.0",