diff --git a/src/PrivateKey.ts b/src/PrivateKey.ts
index b2de91b37..2b45ac927 100644
--- a/src/PrivateKey.ts
+++ b/src/PrivateKey.ts
@@ -1,4 +1,5 @@
 import { BNInput, ec as EC } from 'elliptic';
+import { Buffer } from 'buffer';
 import {
     Key,
     KeyType,
diff --git a/src/PublicKey.ts b/src/PublicKey.ts
index d47571191..3b9b852da 100644
--- a/src/PublicKey.ts
+++ b/src/PublicKey.ts
@@ -1,4 +1,5 @@
 import { ec as EC } from 'elliptic';
+import { Buffer } from 'buffer';
 import {
     Key,
     KeyType,
diff --git a/src/Signature.ts b/src/Signature.ts
index 409d62d6f..fcdfb6dff 100644
--- a/src/Signature.ts
+++ b/src/Signature.ts
@@ -1,4 +1,5 @@
 import { BNInput, ec as EC } from 'elliptic';
+import { Buffer } from 'buffer';
 import BN = require('bn.js');
 
 import {
diff --git a/src/eosjs-jssig.ts b/src/eosjs-jssig.ts
index 0d1671d9d..050e6f80d 100644
--- a/src/eosjs-jssig.ts
+++ b/src/eosjs-jssig.ts
@@ -4,6 +4,7 @@
 // copyright defined in eosjs/LICENSE.txt
 
 import { ec } from 'elliptic';
+import { Buffer } from 'buffer';
 
 import { SignatureProvider, SignatureProviderArgs } from './eosjs-api-interfaces';
 import { PushTransactionArgs } from './eosjs-rpc-interfaces';