Index: wp-includes/script-loader.php
===================================================================
--- wp-includes/script-loader.php	(revision 23345)
+++ wp-includes/script-loader.php	(working copy)
@@ -265,7 +265,7 @@
 	$scripts->add( 'json2', "/wp-includes/js/json2$suffix.js", array(), '2011-02-23');
 
 	$scripts->add( 'underscore', '/wp-includes/js/underscore.min.js', array(), '1.4.1', 1 );
-	$scripts->add( 'backbone', '/wp-includes/js/backbone.min.js', array('underscore','jquery'), '0.9.2', 1 );
+	$scripts->add( 'backbone', '/wp-includes/js/backbone.min.js', array('underscore','jquery'), '0.9.10', 1 );
 
 	$scripts->add( 'imgareaselect', "/wp-includes/js/imgareaselect/jquery.imgareaselect$suffix.js", array('jquery'), '0.9.8', 1 );