diff --git a/source/Ox.UI/Ox.UI.js b/source/Ox.UI/Ox.UI.js
index ad2d621a..2853c025 100644
--- a/source/Ox.UI/Ox.UI.js
+++ b/source/Ox.UI/Ox.UI.js
@@ -207,7 +207,7 @@ Ox.load.UI = function(options, callback) {
 
         Ox.loadFile(Ox.PATH + '/Ox.UI/jquery/jquery.js', function() {
             initUI();
-            Ox.getJSON(Ox.UI.PATH + 'json/Ox.UI.files.json', function(files) {
+            Ox.getJSON(Ox.UI.PATH + 'json/Ox.UI.files.json?' + Ox.random(1000000), function(files) {
                 var promises = [], themes = {};
                 files.forEach(function(file) {
                     var dfd = new $.Deferred();
@@ -228,7 +228,7 @@ Ox.load.UI = function(options, callback) {
                 promises.push(dfd.promise());
                 Ox.getJSON(Ox.UI.PATH + 'json/Ox.UI.image' + (
                     options.loadImages ? 'Data' : ''
-                ) + 'URLs.json', function(images) {
+                ) + 'URLs.json?' + Ox.random(1000000), function(images) {
                     imageURLs = images;
                     Ox.forEach(imageURLs, function(url, key) {
                         imageNames[url] = key.split('/')[1];
diff --git a/source/Ox.js b/source/Ox.js
index 6a0971e4..e3164937 100644
--- a/source/Ox.js
+++ b/source/Ox.js
@@ -40,7 +40,7 @@ window.Ox = {
 
         function loadJSON(callback) {
             var req = new XMLHttpRequest();
-            req.open('GET', path + 'Ox/json/Ox.json', true);
+            req.open('GET', path + 'Ox/json/Ox.json?' + Ox.random(1000000), true);
             req.onreadystatechange = function() {
                 if (req.readyState == 4) {
                     if (req.status == 200) {