diff --git a/package.json b/package.json
index 1987763..9e7d558 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "validate-npm-package-name": "^5.0.0"
   },
   "devDependencies": {
-    "c8": "^8.0.1",
+    "c8": "^9.1.0",
     "fs-test-fixtures": "^0.1.3",
     "mocha": "^10.2.0",
     "semistandard": "^17.0.0",