diff --git a/package.json b/package.json
index 12f2774..ac479cd 100644
--- a/package.json
+++ b/package.json
@@ -15,8 +15,7 @@
     "js-crypto-key-utils": "^1.0.4",
     "keccak": "^3.0.2",
     "secp256k1": "^4.0.3",
-    "tweetnacl": "^1.0.3",
-    "uuid": "^8.3.2"
+    "tweetnacl": "^1.0.3"
   },
   "devDependencies": {
     "docdash": "^1.2.0",
diff --git a/ticc.js b/ticc.js
index 8886ef7..9b0414e 100644
--- a/ticc.js
+++ b/ticc.js
@@ -4,7 +4,7 @@ const crypto = require('crypto')
 const nacl = require('tweetnacl')
 const bs58check = require('bs58check')
 const bs58 = require('bs58') // bs58check depends on bs58
-const uuid = require('uuid')
+//const uuid = require('uuid')
 const keccak = require('keccak')
 const ecc = require('eccrypto-js') // 用于加解密。eccrypto 在 windows 上和 openssl 的版本兼容性有点麻烦，所以换用 eccrypto-js
 const keyman = require('js-crypto-key-utils') // 转换原始密钥和 PER/DER 格式。
@@ -1026,7 +1026,7 @@ class TicCrypto {
    * @memberof TicCrypto
    */
   static randomize_uuid () {
-    return uuid.v4()
+    return crypto.randomUUID() // uuid.v4()
   }
 
   /**