diff --git a/bin/updatecss.sh b/bin/updatecss.sh
new file mode 100755
index 000000000..c477171ff
--- /dev/null
+++ b/bin/updatecss.sh
@@ -0,0 +1,122 @@
+#!/usr/bin/env php
+<?php
+/*
+ +-----------------------------------------------------------------------+
+ | bin/updatecss.sh                                                      |
+ |                                                                       |
+ | This file is part of the Roundcube Webmail client                     |
+ | Copyright (C) 2010-2013, The Roundcube Dev Team                       |
+ |                                                                       |
+ | Licensed under the GNU General Public License version 3 or            |
+ | any later version with exceptions for skins & plugins.                |
+ | See the README file for a full license statement.                     |
+ |                                                                       |
+ | PURPOSE:                                                              |
+ |   Update cache-baster marks for css background images                 |
+ +-----------------------------------------------------------------------+
+ | Author: Aleksander Machniak <alec@alec.pl>                            |
+ +-----------------------------------------------------------------------+
+*/
+
+define('INSTALL_PATH', realpath(dirname(__FILE__) . '/..') . '/' );
+
+require_once INSTALL_PATH . 'program/include/clisetup.php';
+
+// get arguments
+$opts = rcube_utils::get_opt(array(
+    'd' => 'dir',
+));
+
+if (empty($opts['dir'])) {
+    print "Skin directory not specified (--dir). Using skins/ and plugins/skins/.\n";
+
+    $dir     = INSTALL_PATH . 'skins';
+    $dir_p   = INSTALL_PATH . 'plugins';
+    $skins   = glob("$dir/*", GLOB_ONLYDIR);
+    $skins_p = glob("$dir_p/*/skins/*", GLOB_ONLYDIR);
+
+    $dirs = array_merge($skins, $skins_p);
+}
+// Check if directory exists
+else if (!file_exists($opts['dir'])) {
+    rcube::raise_error("Specified directory doesn't exist.", false, true);
+}
+else {
+    $dirs = array($opts['dir']);
+}
+
+foreach ($dirs as $dir) {
+    $img_dir = $dir . '/images';
+    if (!file_exists($img_dir)) {
+        continue;
+    }
+
+    $files   = get_files($dir);
+    $images  = get_images($img_dir);
+    $find    = array();
+    $replace = array();
+
+    // build regexps array
+    foreach ($images as $path => $sum) {
+        $path_ex   = str_replace('.', '\\.', $path);
+        $find[]    = "#url\(['\"]?images/$path_ex(\?v=[a-f0-9-\.]+)?['\"]?\)#";
+        $replace[] = "url(images/$path?v=$sum)";
+    }
+
+    foreach ($files as $file) {
+        $file    = $dir . '/' . $file;
+        print "File: $file\n";
+        $content = file_get_contents($file);
+        $content = preg_replace($find, $replace, $content, -1, $count);
+        if ($count) {
+            file_put_contents($file, $content);
+        }
+    }
+}
+
+
+function get_images($dir)
+{
+    $images = array();
+    $dh     = opendir($dir);
+
+    while ($file = readdir($dh)) {
+        if (preg_match('/^(.+)\.(gif|ico|png|jpg|jpeg)$/', $file, $m)) {
+            $filepath = "$dir/$file";
+            $images[$file] = substr(md5_file($filepath), 0, 4) . '.' . filesize($filepath);
+            print "Image: $filepath ({$images[$file]})\n";
+        }
+        else if ($file != '.' && $file != '..' && is_dir($dir . '/' . $file)) {
+            foreach (get_images($dir . '/' . $file) as $img => $sum) {
+                $images[$file . '/' . $img] = $sum;
+            }
+        }
+    }
+
+    closedir($dh);
+
+    return $images;
+}
+
+function get_files($dir)
+{
+    $files = array();
+    $dh    = opendir($dir);
+
+    while ($file = readdir($dh)) {
+        if (preg_match('/^(.+)\.(css|html)$/', $file, $m)) {
+            $files[] = $file;
+        }
+        else if ($file != '.' && $file != '..' && is_dir($dir . '/' . $file)) {
+            foreach (get_files($dir . '/' . $file) as $f) {
+                $files[] = $file . '/' . $f;
+            }
+        }
+    }
+
+    closedir($dh);
+
+    return $files;
+}
+
+?>