diff --git a/package.json b/package.json
index 221b43d..7c4ff38 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,6 @@
   ],
   "devDependencies": {
     "@0x-jerry/x-release": "^0.4.0",
-    "@types/lodash-es": "^4.17.9",
     "@types/minimist": "^1.2.2",
     "@types/node": "^20.6.2",
     "@vitest/coverage-v8": "^1.0.0",
@@ -37,7 +36,6 @@
   },
   "dependencies": {
     "@0x-jerry/utils": "^2.0.0",
-    "lodash-es": "^4.17.21",
     "minimist": "^1.2.8"
   }
 }
\ No newline at end of file
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index d2f6b26..ad8ff30 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -8,9 +8,6 @@ dependencies:
   '@0x-jerry/utils':
     specifier: ^2.0.0
     version: 2.0.0
-  lodash-es:
-    specifier: ^4.17.21
-    version: 4.17.21
   minimist:
     specifier: ^1.2.8
     version: 1.2.8
@@ -19,9 +16,6 @@ devDependencies:
   '@0x-jerry/x-release':
     specifier: ^0.4.0
     version: 0.4.0
-  '@types/lodash-es':
-    specifier: ^4.17.9
-    version: 4.17.9
   '@types/minimist':
     specifier: ^1.2.2
     version: 1.2.2
@@ -478,16 +472,6 @@ packages:
     resolution: {integrity: sha512-z/QT1XN4K4KYuslS23k62yDIDLwLFkzxOuMplDtObz0+y7VqJCaO2o+SPwHCvLFZh7xazvvoor2tA/hPz9ee7g==}
     dev: true
 
-  /@types/lodash-es@4.17.9:
-    resolution: {integrity: sha512-ZTcmhiI3NNU7dEvWLZJkzG6ao49zOIjEgIE0RgV7wbPxU0f2xT3VSAHw2gmst8swH6V0YkLRGp4qPlX/6I90MQ==}
-    dependencies:
-      '@types/lodash': 4.14.198
-    dev: true
-
-  /@types/lodash@4.14.198:
-    resolution: {integrity: sha512-trNJ/vtMZYMLhfN45uLq4ShQSw0/S7xCTLLVM+WM1rmFpba/VS42jVUgaO3w/NOLiWR/09lnYk0yMaA/atdIsg==}
-    dev: true
-
   /@types/minimist@1.2.2:
     resolution: {integrity: sha512-jhuKLIRrhvCPLqwPcx6INqmKeiA5EWrsCOPhrlFSrbrmU4ZMPjj5Ul/oLCMDO98XRUIwVm78xICz4EPCektzeQ==}
     dev: true
@@ -1045,10 +1029,6 @@ packages:
       pkg-types: 1.0.3
     dev: true
 
-  /lodash-es@4.17.21:
-    resolution: {integrity: sha512-mKnC+QJ9pWVzv+C4/U3rRsHapFfHvQFoFB92e52xeyGMcX6/OlIl78je1u8vePzYZSkkogMPJ2yjxxsb89cxyw==}
-    dev: false
-
   /lodash.sortby@4.7.0:
     resolution: {integrity: sha512-HDWXG8isMntAyRF5vZ7xKuEvOhT4AhlRt/3czTSjvGUxjYCBVRQY48ViDHyfYz9VIoBkW4TMGQNapx+l3RUwdA==}
     dev: true
diff --git a/readme.md b/readme.md
index f4b67fa..23a62b8 100644
--- a/readme.md
+++ b/readme.md
@@ -53,5 +53,4 @@ TODO
 
 - [vitest](https://vitest.dev/)
 - [minimist](https://github.com/minimistjs/minimist)
-- [lodash](https://lodash.com)
 - [tsup](https://tsup.egoist.dev)
\ No newline at end of file
diff --git a/src/parser.ts b/src/parser.ts
index 5421c37..508cd4c 100644
--- a/src/parser.ts
+++ b/src/parser.ts
@@ -7,11 +7,10 @@ import {
   type CmdAction,
   ProgramFlag,
 } from './types'
-import { builtinType, isType, splitFirst } from './utils'
-import { uniqueId } from 'lodash-es'
+import { autoIncrement, builtinType, isType, splitFirst } from './utils'
 
 const TOKEN_ID_PREFIX = '__token_id__'
-const nextId = () => uniqueId(TOKEN_ID_PREFIX)
+const nextId = autoIncrement(TOKEN_ID_PREFIX)
 
 const tokenIdReg = new RegExp(`${TOKEN_ID_PREFIX}\\d+`, 'g')
 
diff --git a/src/utils.ts b/src/utils.ts
index 74e918c..87c22bc 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -19,3 +19,8 @@ export function isType(targetType: string | undefined, type: string | string[])
 export function isBuiltinType(type?: string) {
   return Object.values(builtinType).flat().includes(type!)
 }
+
+export function autoIncrement(prefix = 'i') {
+  let i = 1;
+  return () => `${prefix}${i++}`
+}
\ No newline at end of file