diff --git a/package.json b/package.json
index 02082e7..5fbd839 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
   },
   "devDependencies": {
     "ava": "^8.0.0",
-    "c8": "^10.0.0",
+    "c8": "^12.0.0",
     "eslint": "^10.8.1",
     "eslint-config-problems": "^10.0.1",
     "eslint-plugin-prettier": "^5.0.0",