diff --git a/.travis.yml b/.travis.yml
index 6d83b46..ab5f5ca 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,7 @@ node_js:
   - "5.0"
   - "5"
   - "6"
+  - "7"
   - "stable"
 env:
   - NPM_VERSION=3
diff --git a/etc/webpack.common.js b/etc/webpack.common.js
index 6739500..8b8e810 100755
--- a/etc/webpack.common.js
+++ b/etc/webpack.common.js
@@ -1,5 +1,6 @@
 const util = require('util');
 const path = require('path');
+const os = require('os');
 const helpers = require('./helpers');
 const appConfig = helpers.getAppConfig();
 const debugLog = util.debuglog('@holisticon/angular-common/webpack.common');