diff --git a/package.json b/package.json
index c42b9ff..fba6b24 100644
--- a/package.json
+++ b/package.json
@@ -56,7 +56,7 @@
     "devDependencies": {
         "@eslint-community/eslint-plugin-mysticatea": "file:.",
         "@eslint/eslintrc": "^2.1.4",
-        "eslint": "~8.56.0",
+        "eslint": "~9.6.0",
         "eslint-config-prettier": "^8.10.0",
         "globals": "^13.24.0",
         "mocha": "^9.2.2",