diff --git a/package.json b/package.json
index 8e2187d22..2388c1c06 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
   "homepage": "https://theme-next.js.org",
   "devDependencies": {
     "@next-theme/eslint-config": "0.0.3",
-    "c8": "8.0.1",
+    "c8": "9.1.0",
     "chai": "4.3.10",
     "eslint": "8.55.0",
     "hexo": "7.0.0",