diff --git a/package.json b/package.json
index 74b3355..0a3d36d 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "@types/node": "^18.11.7",
     "@types/sinon": "^10.0.13",
     "@types/through2": "^2.0.36",
-    "c8": "^8.0.1",
+    "c8": "^9.0.0",
     "chai": "^4.3.6",
     "chai-as-promised": "^7.1.1",
     "eslint": "^8.26.0",