diff --git a/js/liquidPledging.js b/js/liquidPledging.js
index 693ef44..74208d4 100644
--- a/js/liquidPledging.js
+++ b/js/liquidPledging.js
@@ -2,7 +2,7 @@ const LiquidPledgingAbi = require('../build/LiquidPledging.sol').LiquidPledgingA
 const LiquidPledgingCode = require('../build/LiquidPledging.sol').LiquidPledgingByteCode;
 const LiquidPledgingMockAbi = require('../build/LiquidPledgingMock.sol').LiquidPledgingMockAbi;
 const LiquidPledgingMockCode = require('../build/LiquidPledgingMock.sol').LiquidPledgingMockByteCode;
-const generateClass = require('eth-contract-class');
+const generateClass = require('eth-contract-class').default;
 
 module.exports = (test) => {
   const $abi = (test) ? LiquidPledgingMockAbi : LiquidPledgingAbi;
diff --git a/js/vault.js b/js/vault.js
index 836ff8c..79ca76f 100644
--- a/js/vault.js
+++ b/js/vault.js
@@ -1,5 +1,5 @@
 const VaultAbi = require('../build/Vault.sol').VaultAbi;
 const VaultByteCode = require('../build/Vault.sol').VaultByteCode;
-const generateClass = require('eth-contract-class');
+const generateClass = require('eth-contract-class').default;
 
 module.exports = generateClass(VaultAbi, VaultByteCode);
diff --git a/package.json b/package.json
index e3ca660..4062d2f 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
   "dependencies": {
     "async": "^2.4.0",
     "chai": "^4.1.0",
-    "eth-contract-class": "0.0.1",
+    "eth-contract-class": "0.0.2",
     "ethconnector": "0.0.25"
   }
 }