diff --git a/package.json b/package.json
index 8bbaf50..f89955b 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "stream-chunks": "^1.0.0"
   },
   "devDependencies": {
-    "c8": "^9.1.0",
+    "c8": "^10.1.2",
     "express": "^4.18.2",
     "express-as-promise": "^2.0.0",
     "is-stream": "^4.0.1",