diff --git a/package.json b/package.json
index 1ac8acf..003607e 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "@types/js-yaml": "^3.12.5",
     "@types/json5": "^2.2.0",
     "@types/minimist": "^1.2.1",
-    "@types/mocha": "^8.0.4",
+    "@types/mocha": "^9.0.0",
     "@types/node": "^14.14.10",
     "@typescript-eslint/eslint-plugin": "^4.9.0",
     "@typescript-eslint/parser": "^4.9.0",