diff --git a/lib/bip38.js b/lib/bip38.js
index 21c3626..44f0a3b 100644
--- a/lib/bip38.js
+++ b/lib/bip38.js
@@ -1,7 +1,7 @@
 var AES = require('aes')
 var assert = require('assert')
-var base58check = require('bs58check')
 var crypto = require('crypto')
+var cs = require('coinstring')
 var scrypt = require('scryptsy')
 
 var ecurve = require('ecurve')
@@ -58,7 +58,7 @@ Bip38.prototype.encryptRaw = function(buffer, compressed, passphrase, saltAddres
 }
 
 Bip38.prototype.encrypt = function(wif, passphrase, saltAddress) {
-  var d = base58check.decode(wif).slice(1)
+  var d = cs.decode(wif).slice(1)
   var compressed = (d.length === 33) && (d[32] === 0x01)
 
   // truncate the compression flag
@@ -66,7 +66,7 @@ Bip38.prototype.encrypt = function(wif, passphrase, saltAddress) {
     d = d.slice(0, -1)
   }
 
-  return base58check.encode(this.encryptRaw(d, compressed, passphrase, saltAddress))
+  return cs.encode(this.encryptRaw(d, compressed, passphrase, saltAddress))
 }
 
 //some of the techniques borrowed from: https://github.com/pointbiz/bitaddress.org
@@ -122,7 +122,7 @@ Bip38.prototype.decryptRaw = function(encData, passphrase) {
 }
 
 Bip38.prototype.decrypt = function(encryptedBase58, passphrase) {
-  var encBuffer = base58check.decode(encryptedBase58)
+  var encBuffer = cs.decode(encryptedBase58)
   var decrypt = this.decryptRaw(encBuffer, passphrase)
 
   // Convert to WIF
@@ -136,7 +136,7 @@ Bip38.prototype.decrypt = function(encryptedBase58, passphrase) {
     buffer.writeUInt8(0x01, 33)
   }
 
-  return base58check.encode(buffer)
+  return cs.encode(buffer)
 }
 
 Bip38.prototype.decryptECMult = function(encData, passphrase) {
diff --git a/package.json b/package.json
index f30a8fa..2497e94 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
   "dependencies": {
     "aes": "~0.1.0",
     "bigi": "^1.2.0",
-    "bs58check": "^1.0.0",
+    "coinstring": "^2.0.0",
     "ecurve": "^1.0.0",
     "scryptsy": "^1.0.0"
   },