diff --git a/package.json b/package.json
index f2be5d9..ee125ce 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
   "dependencies": {},
   "peerDependencies": {},
   "devDependencies": {
-    "c8": "^8.0.0",
+    "c8": "^9.1.0",
     "codecov": "^3.2.0",
     "oletus": "^4.0.0",
     "rollup": "^4.6.1",