diff --git a/config/build.config.js b/config/build.config.js
index 0574edaf862..abf1ebf0592 100644
--- a/config/build.config.js
+++ b/config/build.config.js
@@ -3,7 +3,7 @@ var fs = require('fs');
 var versionFile = __dirname + '/../dist/commit';
 
 module.exports = {
-  ngVersion: '1.4.2',
+  ngVersion: '1.3.15',
   version: pkg.version,
   repository: pkg.repository.url
     .replace(/^git/,'https')