diff --git a/@beautiful-tree/algorithms/package.json b/@beautiful-tree/algorithms/package.json
index 963b57a..91a20ba 100644
--- a/@beautiful-tree/algorithms/package.json
+++ b/@beautiful-tree/algorithms/package.json
@@ -56,7 +56,7 @@
     "@types/node": "^20.8.0",
     "@typescript-eslint/parser": "^6.7.3",
     "@vitest/coverage-v8": "^0.34.6",
-    "eslint": "^8.50.0",
+    "eslint": "^9.0.0",
     "prettier": "^3.0.3",
     "publint": "^0.2.3",
     "rollup": "^3.29.4",