diff --git a/keys.js b/keys.js
index c36e3d9..e6e0abd 100644
--- a/keys.js
+++ b/keys.js
@@ -1,4 +1,5 @@
 import * as secp256k1 from '@noble/secp256k1'
+import {Buffer} from 'buffer'
 
 export function generatePrivateKey() {
   return Buffer.from(secp256k1.utils.randomPrivateKey()).toString('hex')