diff --git a/package.json b/package.json
index 286f521..ddd8427 100644
--- a/package.json
+++ b/package.json
@@ -1,53 +1,56 @@
 {
-  "name": "@kaisukez/cancellation-token",
-  "version": "3.1.1",
-  "description": "This library provides you ability to cancel async function",
-  "author": "Nattapon Chantasiriworawat <nattapon.ctsr@gmail.com>",
-  "license": "MIT",
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/kaisukez/cancellation-token.git"
-  },
-  "bugs": {
-    "url": "https://github.com/kaisukez/cancellation-token/issues"
-  },
-  "homepage": "https://github.com/kaisukez/cancellation-token",
-  "keywords": [
-    "abort",
-    "cancel",
-    "cancellable",
-    "cancellation",
-    "controller",
-    "promise",
-    "token"
-  ],
-  "files": [
-    "dist"
-  ],
-  "main": "./dist/index.js",
-  "module": "./dist/index.mjs",
-  "types": "./dist/index.d.ts",
-  "exports": {
-    ".": {
-      "require": "./dist/index.js",
-      "import": "./dist/index.mjs",
-      "types": "./dist/index.d.ts"
+    "name": "@kaisukez/cancellation-token",
+    "version": "3.1.1",
+    "description": "This library provides you ability to cancel async function",
+    "author": "Nattapon Chantasiriworawat <nattapon.ctsr@gmail.com>",
+    "license": "MIT",
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/kaisukez/cancellation-token.git"
     },
-    "./package.json": "./package.json"
-  },
-  "scripts": {
-    "build": "rm -rf dist && tsup src/index.ts --format cjs,esm --dts",
-    "test": "jest -c jest.config.js --coverage"
-  },
-  "devDependencies": {
-    "@types/jest": "^29.5.5",
-    "@types/node": "^20.8.5",
-    "@types/node-fetch": "^2.6.6",
-    "jest": "^29.7.0",
-    "node-abort-controller": "^3.1.1",
-    "node-fetch": "^3.3.2",
-    "ts-jest": "^29.1.1",
-    "tsup": "^7.2.0",
-    "typescript": "^5.2.2"
-  }
+    "bugs": {
+        "url": "https://github.com/kaisukez/cancellation-token/issues"
+    },
+    "homepage": "https://github.com/kaisukez/cancellation-token",
+    "keywords": [
+        "abort",
+        "cancel",
+        "cancellable",
+        "cancellation",
+        "controller",
+        "promise",
+        "token"
+    ],
+    "files": [
+        "dist"
+    ],
+    "main": "./dist/index.js",
+    "module": "./dist/index.mjs",
+    "types": "./dist/index.d.ts",
+    "exports": {
+        ".": {
+            "require": "./dist/index.js",
+            "import": "./dist/index.mjs",
+            "types": "./dist/index.d.ts"
+        },
+        "./package.json": "./package.json"
+    },
+    "engines": {
+        "node": ">=20"
+    },
+    "scripts": {
+        "build": "rm -rf dist && tsup src/index.ts --format cjs,esm --dts",
+        "test": "jest -c jest.config.js --coverage"
+    },
+    "devDependencies": {
+        "@types/jest": "^29.5.5",
+        "@types/node": "^20.8.5",
+        "@types/node-fetch": "^2.6.6",
+        "jest": "^29.7.0",
+        "node-abort-controller": "^3.1.1",
+        "node-fetch": "^3.3.2",
+        "ts-jest": "^29.1.1",
+        "tsup": "^7.2.0",
+        "typescript": "^5.2.2"
+    }
 }