diff --git a/config/express.js b/config/express.js
index 4bf7641..2e70ade 100644
--- a/config/express.js
+++ b/config/express.js
@@ -37,6 +37,13 @@ module.exports = function(app, historicSync, peerSync) {
   app.use(express.methodOverride());
   app.use(express.compress());
 
+  app.use(function(req, res, next) {
+    res.setHeader('Access-Control-Allow-Origin', '*');
+    res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS, PUT, PATCH, DELETE');
+    res.setHeader('Access-Control-Allow-Headers', 'X-Requested-With,content-type');
+    next();
+  });
+
   if (config.publicPath) {
     var staticPath = path.normalize(config.rootPath + '/../' + config.publicPath);