diff --git a/package.json b/package.json
index b2a0ae56..705da035 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "srcset": "^5.0.0"
   },
   "devDependencies": {
-    "c8": "^8.0.0",
+    "c8": "^9.0.0",
     "eslint": "^8.5.0",
     "mocha": "^10.0.0",
     "nock": "^13.0.11",