diff --git a/package.json b/package.json
index 276ebfb..781f965 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
   "devDependencies": {
     "@eslint/js": "^9.39.4",
     "@types/node": "^25.9.4",
-    "c8": "^10.1.3",
+    "c8": "^12.0.0",
     "eslint": "^9.39.4",
     "eslint-plugin-import": "^2.32.0",
     "glob": "^13.0.6",