diff --git a/bitcore.js b/bitcore.js
index 89eeef3ab..d712bc424 100644
--- a/bitcore.js
+++ b/bitcore.js
@@ -14,7 +14,7 @@ module.exports.Opcode = require('./Opcode');
 module.exports.util = require('./util/util');
 module.exports.Script = require('./Script');
 module.exports.SINKey = require('./SINKey');
-//module.exports.Transaction = require('./Transaction');
+module.exports.Transaction = require('./Transaction');
 
 
 if (typeof process.versions === 'undefined') {
diff --git a/package.json b/package.json
index 6461a0760..d6b7ee375 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "binary": "=0.3.0",
     "step": "=0.0.4",
     "buffers": "=0.1.1",
-    "buffertools": "=1.1.1",
+    "buffertools": "~2.0.1",
     "mocha": ">=1.15.1",
     "browserify-bignum": "git://github.com/maraoz/browserify-bignum.git"
   },
diff --git a/test/test.Transaction.js b/test/test.Transaction.js
index 02da04a9e..98889dee9 100644
--- a/test/test.Transaction.js
+++ b/test/test.Transaction.js
@@ -8,7 +8,7 @@ var should = chai.should();
 var TransactionModule = bitcore.Transaction;
 var Transaction;
 
-describe.skip('Transaction', function() {
+describe('Transaction', function() {
   it('should initialze the main object', function() {
     should.exist(TransactionModule);
   });
diff --git a/util/util.js b/util/util.js
index 5568610ad..d1326d683 100644
--- a/util/util.js
+++ b/util/util.js
@@ -4,6 +4,7 @@ var crypto = require('crypto');
 var bignum = require('bignum');
 var Binary = require('binary');
 var Put = require('bufferput');
+require('buffertools').extend();
 
 var sha256 = exports.sha256 = function (data) {
   return new Buffer(crypto.createHash('sha256').update(data).digest('binary'), 'binary');