diff --git a/package.json b/package.json
index ee7d586a..4fd498eb 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,7 @@
     "@types/node": "^18.19.54",
     "@types/sinon": "^17.0.3",
     "chai": "^4.5.0",
-    "eslint": "^8.57.1",
+    "eslint": "^9.12.0",
     "eslint-config-teppeis": "^19.1.2",
     "mocha": "^10.7.3",
     "npm-run-all": "^4.1.5",