diff --git a/packages/contract-addresses/src/index.js b/packages/contract-addresses/src/index.js
index c4fd181cc..88222879e 100644
--- a/packages/contract-addresses/src/index.js
+++ b/packages/contract-addresses/src/index.js
@@ -1,6 +1,6 @@
 const { isUndefined } = require('lodash');
 
-// const mainnetAddresses = require('../addresses/mainnet');
+const mainnetAddresses = require('../addresses/mainnet');
 const rinkebyAddresses = require('../addresses/rinkeby');
 const ropstenAddresses = require('../addresses/ropsten');
 
@@ -12,9 +12,9 @@ const NetworkId = {
 };
 
 const networkToAddresses = {
-    // '1': {
-    //     ...mainnetAddresses,
-    // },
+    '1': {
+        ...mainnetAddresses,
+    },
     '3': {
         ...ropstenAddresses,
     },