diff --git a/package.json b/package.json
index 1897238..759571c 100644
--- a/package.json
+++ b/package.json
@@ -80,7 +80,7 @@
     "cross-env": "^7.0.2",
     "env-cmd": "^10.1.0",
     "esbuild": "^0.20.0",
-    "eslint": "^8.0.0",
+    "eslint": "^9.0.0",
     "eslint-config-prettier": "^9.0.0",
     "eslint-plugin-eslint-comments": "^3.2.0",
     "eslint-plugin-eslint-plugin": "^5.0.0",
diff --git a/playground/package.json b/playground/package.json
index e08f356..8ad8e94 100644
--- a/playground/package.json
+++ b/playground/package.json
@@ -9,7 +9,7 @@
   },
   "license": "MIT",
   "devDependencies": {
-    "eslint": "^8.0.0",
+    "eslint": "^9.0.0",
     "eslint-plugin-toml": "^0.11.0"
   }
 }