diff --git a/.eslintrc.yaml b/.eslintrc.yaml
deleted file mode 100644
index 34237f9..0000000
--- a/.eslintrc.yaml
+++ /dev/null
@@ -1,16 +0,0 @@
-env:
-  es6: true
-  node: true
-  mocha: true
-
-root: true
-
-rules:
-  no-var: "error"
-  no-cond-assign: ["error", "except-parens"]
-  no-trailing-spaces: ["error", { "skipBlankLines": false }]
-  no-empty: [ "error", { "allowEmptyCatch": true } ]
-  no-shadow: "error"
-  prefer-template: "warn"
-
-extends: ["eslint:recommended"]
diff --git a/eslint.config.mjs b/eslint.config.mjs
new file mode 100644
index 0000000..e11c1ab
--- /dev/null
+++ b/eslint.config.mjs
@@ -0,0 +1,39 @@
+import globals from "globals";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import js from "@eslint/js";
+import { FlatCompat } from "@eslint/eslintrc";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const compat = new FlatCompat({
+    baseDirectory: __dirname,
+    recommendedConfig: js.configs.recommended,
+    allConfig: js.configs.all
+});
+
+export default [...compat.extends("eslint:recommended"), {
+    languageOptions: {
+        globals: {
+            ...globals.node,
+            ...globals.mocha,
+        },
+    },
+
+    rules: {
+        "no-var": "error",
+        "no-cond-assign": ["error", "except-parens"],
+
+        "no-trailing-spaces": ["error", {
+            skipBlankLines: false,
+        }],
+
+        "no-empty": ["error", {
+            allowEmptyCatch: true,
+        }],
+
+        "no-shadow": "error",
+        "prefer-template": "warn",
+        "no-unused-vars": "warn",
+    },
+}];
\ No newline at end of file
diff --git a/package.json b/package.json
index eea09c7..9738c7c 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
   },
   "dependencies": {},
   "devDependencies": {
-    "eslint": "^8.57.0",
+    "eslint": "^9.19.0",
     "uglify-es": "*"
   },
   "scripts": {
@@ -19,7 +19,6 @@
   },
   "files": [
     "lib",
-    "LICENSE",
     "ipaddr.min.js"
   ],
   "keywords": [