diff --git a/package.json b/package.json
index 3bcdc7c..ef6c12e 100644
--- a/package.json
+++ b/package.json
@@ -61,7 +61,7 @@
     "@types/node": "^20.4.9",
     "@types/pumpify": "^1.4.1",
     "@types/sinon": "^10.0.0",
-    "c8": "^8.0.1",
+    "c8": "^9.0.0",
     "gts": "^5.0.0",
     "linkinator": "^4.0.0",
     "mocha": "^9.2.2",