diff --git a/src/services/remote-signer.ts b/src/services/remote-signer.ts
index 8af9224..d2139a9 100644
--- a/src/services/remote-signer.ts
+++ b/src/services/remote-signer.ts
@@ -4,6 +4,7 @@ import invariant from 'tiny-invariant';
 import { RemoteSigner, RemoteSignerCredentials } from '../types';
 import { toUtf8Bytes } from '@ethersproject/strings';
 import { Bytes } from '@ethersproject/bytes';
+import { Buffer } from 'buffer';
 
 interface RemoteSignerServiceProperties {
   remoteSigner: RemoteSigner;