diff --git a/package.json b/package.json
index 4865905d..ae2cd533 100644
--- a/package.json
+++ b/package.json
@@ -80,7 +80,7 @@
     "@iktakahiro/markdown-it-katex": "4.0.1",
     "ajv": "8.16.0",
     "ava": "6.1.3",
-    "c8": "9.1.0",
+    "c8": "10.0.0",
     "cpy": "11.0.1",
     "cpy-cli": "5.0.0",
     "del": "7.1.0",