diff --git a/lib/jquery/rails/version.rb b/lib/jquery/rails/version.rb
index f87c0462..1ec3df68 100644
--- a/lib/jquery/rails/version.rb
+++ b/lib/jquery/rails/version.rb
@@ -3,6 +3,6 @@ module Rails
     VERSION = "2.2.0"
     JQUERY_VERSION = "1.9.0"
     JQUERY_UI_VERSION  = "1.9.2"
-    JQUERY_UJS_VERSION = "bddff6a677edc54f00e48bde740b0b22d68deef6"
+    JQUERY_UJS_VERSION = "aab2251d90afbdfc808d8031312d063b1ccf8f6f"
   end
 end
diff --git a/vendor/assets/javascripts/jquery_ujs.js b/vendor/assets/javascripts/jquery_ujs.js
index 53c296c7..f63fe049 100644
--- a/vendor/assets/javascripts/jquery_ujs.js
+++ b/vendor/assets/javascripts/jquery_ujs.js
@@ -2,47 +2,12 @@
 
 /**
  * Unobtrusive scripting adapter for jQuery
- *
- * Requires jQuery 1.6.0 or later.
  * https://github.com/rails/jquery-ujs
-
- * Uploading file using rails.js
- * =============================
- *
- * By default, browsers do not allow files to be uploaded via AJAX. As a result, if there are any non-blank file fields
- * in the remote form, this adapter aborts the AJAX submission and allows the form to submit through standard means.
- *
- * The `ajax:aborted:file` event allows you to bind your own handler to process the form submission however you wish.
- *
- * Ex:
- *     $('form').bind('ajax:aborted:file', function(event, elements){
- *       // Implement own remote file-transfer handler here for non-blank file inputs passed in `elements`.
- *       // Returning false in this handler tells rails.js to disallow standard form submission
- *       return false;
- *     });
- *
- * The `ajax:aborted:file` event is fired when a file-type input is detected with a non-blank value.
- *
- * Third-party tools can use this hook to detect when an AJAX file upload is attempted, and then use
- * techniques like the iframe method to upload the file instead.
- *
- * Required fields in rails.js
- * ===========================
- *
- * If any blank required inputs (required="required") are detected in the remote form, the whole form submission
- * is canceled. Note that this is unlike file inputs, which still allow standard (non-AJAX) form submission.
  *
- * The `ajax:aborted:required` event allows you to bind your own handler to inform the user of blank required inputs.
+ * Requires jQuery 1.7.0 or later.
  *
- * !! Note that Opera does not fire the form's submit event if there are blank required inputs, so this event may never
- *    get fired in Opera. This event is what causes other browsers to exhibit the same submit-aborting behavior.
+ * Released under the MIT license
  *
- * Ex:
- *     $('form').bind('ajax:aborted:required', function(event, elements){
- *       // Returning false in this handler tells rails.js to submit the form anyway.
- *       // The blank required inputs are passed to this function in `elements`.
- *       return ! confirm("Would you like to submit the form with missing info?");
- *     });
  */
 
   // Cut down on the number if issues from people inadvertently including jquery_ujs twice
@@ -82,7 +47,7 @@
     requiredInputSelector: 'input[name][required]:not([disabled]),textarea[name][required]:not([disabled])',
 
     // Form file input elements
-    fileInputSelector: 'input:file',
+    fileInputSelector: 'input[type=file]',
 
     // Link onClick disable selector with possible reenable after remote submission
     linkDisableSelector: 'a[data-disable-with]',
@@ -118,17 +83,12 @@
     // Submits "remote" forms and links with ajax
     handleRemote: function(element) {
       var method, url, data, elCrossDomain, crossDomain, withCredentials, dataType, options;
-      var xhrFields = {};
 
       if (rails.fire(element, 'ajax:before')) {
         elCrossDomain = element.data('cross-domain');
         crossDomain = elCrossDomain === undefined ? null : elCrossDomain;
-        dataType = element.data('type') || ($.ajaxSettings && $.ajaxSettings.dataType);
         withCredentials = element.data('with-credentials') || null;
-
-        if (withCredentials) {
-          xhrFields["withCredentials"] = withCredentials;
-        }
+        dataType = element.data('type') || ($.ajaxSettings && $.ajaxSettings.dataType);
 
         if (element.is('form')) {
           method = element.attr('method');
@@ -169,9 +129,17 @@
           error: function(xhr, status, error) {
             element.trigger('ajax:error', [xhr, status, error]);
           },
-          xhrFields: xhrFields,
           crossDomain: crossDomain
         };
+
+        // There is no withCredentials for IE6-8 when
+        // "Enable native XMLHTTP support" is disabled
+        if (withCredentials) {
+          options.xhrFields = {
+            withCredentials: withCredentials
+          };
+        }
+
         // Only pass url to `ajax` options if not blank
         if (url) { options.url = url; }
 
@@ -260,12 +228,12 @@
 
       allInputs.each(function() {
         input = $(this);
-        valueToCheck = input.is(':checkbox,:radio') ? input.is(':checked') : input.val();
+        valueToCheck = input.is('input[type=checkbox],input[type=radio]') ? input.is(':checked') : input.val();
         // If nonBlank and valueToCheck are both truthy, or nonBlank and valueToCheck are both falsey
         if (!valueToCheck === !nonBlank) {
 
           // Don't count unchecked required radio if other radio with same name is checked
-          if (input.is(':radio') && allInputs.filter('input:radio:checked[name="' + input.attr('name') + '"]').length) {
+          if (input.is('input[type=radio]') && allInputs.filter('input[type=radio]:checked[name="' + input.attr('name') + '"]').length) {
             return true; // Skip to next input
           }
 
@@ -423,8 +391,8 @@
 
     $(function(){
       // making sure that all forms have actual up-to-date token(cached forms contain old one)
-      csrf_token = $('meta[name=csrf-token]').attr('content');
-      csrf_param = $('meta[name=csrf-param]').attr('content');
+      var csrf_token = $('meta[name=csrf-token]').attr('content');
+      var csrf_param = $('meta[name=csrf-param]').attr('content');
       $('form input[name="' + csrf_param + '"]').val(csrf_token);
     });
   }