diff --git a/package.json b/package.json
index 6b11f97..9880116 100644
--- a/package.json
+++ b/package.json
@@ -54,10 +54,11 @@
     "ecurve": "1.0.0"
   },
   "devDependencies": {
+    "async": "^0.9.0",
     "browserify": "^5.12.0",
     "bs58": "^2.0.0",
+    "cb-helloblock": "^0.4.7",
     "coveralls": "^2.11.2",
-    "helloblock-js": "^0.2.5",
     "istanbul": "^0.3.2",
     "jshint": "^2.5.6",
     "mocha": "^1.21.4",
diff --git a/test/integration/advanced.js b/test/integration/advanced.js
index a6479f3..b4effbb 100644
--- a/test/integration/advanced.js
+++ b/test/integration/advanced.js
@@ -1,8 +1,6 @@
 var assert = require('assert')
 var bitcoin = require('../../')
-var helloblock = require('helloblock-js')({
-  network: 'testnet'
-})
+var blockchain = new (require('cb-helloblock'))('testnet')
 
 describe('bitcoinjs-lib (advanced)', function() {
   it('can sign a Bitcoin message', function() {
@@ -27,10 +25,10 @@ describe('bitcoinjs-lib (advanced)', function() {
     var key = bitcoin.ECKey.fromWIF("L1uyy5qTuGrVXrmrsvHWHgVzW9kKdrp27wBC7Vs6nZDTF2BRUVwy")
     var address = key.pub.getAddress(bitcoin.networks.testnet).toString()
 
-    helloblock.faucet.withdraw(address, 2e4, function(err) {
+    blockchain.addresses.__faucetWithdraw(address, 2e4, function(err) {
       if (err) return done(err)
 
-      helloblock.addresses.getUnspents(address, function(err, _, unspents) {
+      blockchain.addresses.unspents(address, function(err, unspents) {
         if (err) return done(err)
 
         // filter small unspents
@@ -44,20 +42,19 @@ describe('bitcoinjs-lib (advanced)', function() {
         var data = new Buffer('cafedeadbeef', 'hex')
         var dataScript = bitcoin.scripts.nullDataOutput(data)
 
-        tx.addInput(unspent.txHash, unspent.index)
+        tx.addInput(unspent.txId, unspent.vout)
         tx.addOutput(dataScript, 1000)
         tx.sign(0, key)
 
-        helloblock.transactions.propagate(tx.build().toHex(), function(err) {
+        blockchain.transactions.propagate(tx.build().toHex(), function(err) {
           if (err) return done(err)
 
           // check that the message was propagated
-          helloblock.addresses.getTransactions(address, function(err, res, transactions) {
+          blockchain.addresses.transactions(address, function(err, transactions) {
             if (err) return done(err)
 
-            var transaction = transactions[0]
-            var output = transaction.outputs[0]
-            var dataScript2 = bitcoin.Script.fromHex(output.scriptPubKey)
+            var transaction = bitcoin.Transaction.fromHex(transactions[0].txHex)
+            var dataScript2 = transaction.outs[0].script
             var data2 = dataScript2.chunks[1]
 
             assert.deepEqual(dataScript, dataScript2)
diff --git a/test/integration/multisig.js b/test/integration/multisig.js
index 60f46c9..911affd 100644
--- a/test/integration/multisig.js
+++ b/test/integration/multisig.js
@@ -1,8 +1,6 @@
 var assert = require('assert')
 var bitcoin = require('../../')
-var helloblock = require('helloblock-js')({
-  network: 'testnet'
-})
+var blockchain = new (require('cb-helloblock'))('testnet')
 
 describe('bitcoinjs-lib (multisig)', function() {
   it('can create a 2-of-3 multisig P2SH address', function() {
@@ -33,11 +31,11 @@ describe('bitcoinjs-lib (multisig)', function() {
     var address = bitcoin.Address.fromOutputScript(scriptPubKey, bitcoin.networks.testnet).toString()
 
     // Attempt to send funds to the source address
-    helloblock.faucet.withdraw(address, 2e4, function(err) {
+    blockchain.addresses.__faucetWithdraw(address, 2e4, function(err) {
       if (err) return done(err)
 
       // get latest unspents from the address
-      helloblock.addresses.getUnspents(address, function(err, _, unspents) {
+      blockchain.addresses.unspents(address, function(err, unspents) {
         if (err) return done(err)
 
         // filter small unspents
@@ -50,7 +48,7 @@ describe('bitcoinjs-lib (multisig)', function() {
         var targetAddress = bitcoin.ECKey.makeRandom().pub.getAddress(bitcoin.networks.testnet).toString()
 
         var txb = new bitcoin.TransactionBuilder()
-        txb.addInput(unspent.txHash, unspent.index)
+        txb.addInput(unspent.txId, unspent.vout)
         txb.addOutput(targetAddress, 1e4)
 
         // sign w/ each private key
@@ -59,14 +57,14 @@ describe('bitcoinjs-lib (multisig)', function() {
         })
 
         // broadcast our transaction
-        helloblock.transactions.propagate(txb.build().toHex(), function(err) {
+        blockchain.transactions.propagate(txb.build().toHex(), function(err) {
           if (err) return done(err)
 
           // check that the funds (1e4 Satoshis) indeed arrived at the intended address
-          helloblock.addresses.get(targetAddress, function(err, res, addrInfo) {
+          blockchain.addresses.summary(targetAddress, function(err, result) {
             if (err) return done(err)
 
-            assert.equal(addrInfo.balance, 1e4)
+            assert.equal(result.balance, 1e4)
             done()
           })
         })