diff --git a/lib/addresses/Registry.json b/lib/addresses/Registry.json
index 8bdcb57..25faf40 100644
--- a/lib/addresses/Registry.json
+++ b/lib/addresses/Registry.json
@@ -1 +1 @@
-{"42":"0xc270e6ea4fe303df9f1a3d4a132ac425264082e7","100":"0x513f8e80a8fbb9fa188320ecf231efcf2f6da9c5"}
\ No newline at end of file
+{"42":"0xc270e6ea4fe303df9f1a3d4a132ac425264082e7","100":"0x7458dea485d9d8301e3ce43e8a1ec1456be5ba83"}
\ No newline at end of file
diff --git a/scripts/build-json.js b/scripts/build-json.js
index 3bc2855..db00827 100644
--- a/scripts/build-json.js
+++ b/scripts/build-json.js
@@ -20,11 +20,12 @@ files.forEach((fileName) => {
 
   if (fileName === 'Registry') {
     let addresseFile = path.join(addressesPath, `${fileName}.json`);
+    let content = fs.readFileSync(addresseFile);
     let addresses = Object.keys(file.networks)
       .reduce((addresses, key) => {
         addresses[key] = file.networks[key].address;
         return addresses;
-      }, {});
+      }, JSON.parse(content));
     fs.writeFileSync(addresseFile, JSON.stringify(addresses));
   }
 });