diff --git a/phpBB/includes/functions.php b/phpBB/includes/functions.php
index 9a6af29d69..a13605f688 100644
--- a/phpBB/includes/functions.php
+++ b/phpBB/includes/functions.php
@@ -4767,6 +4767,7 @@ function page_header($page_title = '', $display_online_list = true, $item_id = 0
 
 		'S_SEARCH_HIDDEN_FIELDS'	=> build_hidden_fields($s_search_hidden_fields),
 
+		'T_ASSETS_VERSION'		=> $config['assets_version'],
 		'T_ASSETS_PATH'			=> "{$web_path}assets",
 		'T_THEME_PATH'			=> "{$web_path}styles/" . rawurlencode($user->theme['style_path']) . '/theme',
 		'T_TEMPLATE_PATH'		=> "{$web_path}styles/" . rawurlencode($user->theme['style_path']) . '/template',
@@ -4778,10 +4779,10 @@ function page_header($page_title = '', $display_online_list = true, $item_id = 0
 		'T_ICONS_PATH'			=> "{$web_path}{$config['icons_path']}/",
 		'T_RANKS_PATH'			=> "{$web_path}{$config['ranks_path']}/",
 		'T_UPLOAD_PATH'			=> "{$web_path}{$config['upload_path']}/",
-		'T_STYLESHEET_LINK'		=> "{$web_path}styles/" . rawurlencode($user->theme['style_path']) . '/theme/stylesheet.css',
-		'T_STYLESHEET_LANG_LINK'    => "{$web_path}styles/" . rawurlencode($user->theme['style_path']) . '/theme/' . $user->lang_name . '/stylesheet.css',
+		'T_STYLESHEET_LINK'		=> "{$web_path}styles/" . rawurlencode($user->theme['style_path']) . '/theme/stylesheet.css?assets_version=' . $config['assets_version'],
+		'T_STYLESHEET_LANG_LINK'    => "{$web_path}styles/" . rawurlencode($user->theme['style_path']) . '/theme/' . $user->lang_name . '/stylesheet.css?assets_version=' . $config['assets_version'],
 		'T_STYLESHEET_NAME'		=> $user->theme['style_name'],
-		'T_JQUERY_LINK'			=> ($config['load_jquery_cdn'] && !empty($config['load_jquery_url'])) ? $config['load_jquery_url'] : "{$web_path}assets/javascript/jquery.js",
+		'T_JQUERY_LINK'			=> ($config['load_jquery_cdn'] && !empty($config['load_jquery_url'])) ? $config['load_jquery_url'] : "{$web_path}assets/javascript/jquery.js?assets_version=" . $config['assets_version'],
 		'S_JQUERY_FALLBACK'		=> ($config['load_jquery_cdn']) ? true : false,
 
 		'T_THEME_NAME'			=> rawurlencode($user->theme['style_path']),
diff --git a/phpBB/includes/style/template_filter.php b/phpBB/includes/style/template_filter.php
index d62ad0ba1e..f9bbcce4b2 100644
--- a/phpBB/includes/style/template_filter.php
+++ b/phpBB/includes/style/template_filter.php
@@ -882,6 +882,8 @@ class phpbb_style_template_filter extends php_user_filter
 	*/
 	private function compile_tag_include_js($tag_args)
 	{
+		global $config;
+
 		// Process dynamic includes
 		if ($tag_args[0] == '{')
 		{
@@ -894,7 +896,7 @@ class phpbb_style_template_filter extends php_user_filter
 		}
 
 		// Locate file
-		$filename = $this->locator->get_first_file_location(array($tag_args), false, true);
+		$filename = $this->locator->get_first_file_location(array($tag_args), false, true) . '?assets_version=' . $config['assets_version'];
 		
 		if ($filename === false)
 		{
diff --git a/phpBB/install/database_update.php b/phpBB/install/database_update.php
index be39b12d12..5368ec06bb 100644
--- a/phpBB/install/database_update.php
+++ b/phpBB/install/database_update.php
@@ -189,6 +189,12 @@ $config = new phpbb_config_db($db, $cache->get_driver(), CONFIG_TABLE);
 set_config(null, null, null, $config);
 set_config_count(null, null, null, $config);
 
+// Update asset_version
+if (isset($config['assets_version']))
+{
+	set_config('assets_version', $config['assets_version'] + 1);
+}
+
 // phpbb_db_tools will be taken from new files (under install/update/new)
 // if possible, falling back to the board's copy.
 $db_tools = new phpbb_db_tools($db, true);
@@ -2424,6 +2430,11 @@ function change_database_data(&$no_updates, $version)
 			
 			$no_updates = false;
 
+			if (!isset($config['assets_version']))
+			{
+				$config->set('assets_version', '1');
+			}
+
 		break;
 	}
 }
diff --git a/phpBB/styles/prosilver/template/overall_footer.html b/phpBB/styles/prosilver/template/overall_footer.html
index c84b327b71..621f7ab0af 100644
--- a/phpBB/styles/prosilver/template/overall_footer.html
+++ b/phpBB/styles/prosilver/template/overall_footer.html
@@ -50,8 +50,8 @@
 </div>
 
 <script type="text/javascript" src="{T_JQUERY_LINK}"></script>
-<!-- IF S_JQUERY_FALLBACK --><script type="text/javascript">window.jQuery || document.write(unescape('%3Cscript src="{T_ASSETS_PATH}/javascript/jquery.js" type="text/javascript"%3E%3C/script%3E'));</script><!-- ENDIF -->
-<script type="text/javascript" src="{T_ASSETS_PATH}/javascript/core.js"></script>
+<!-- IF S_JQUERY_FALLBACK --><script type="text/javascript">window.jQuery || document.write(unescape('%3Cscript src="{T_ASSETS_PATH}/javascript/jquery.js?assets_version={T_ASSETS_VERSION}" type="text/javascript"%3E%3C/script%3E'));</script><!-- ENDIF -->
+<script type="text/javascript" src="{T_ASSETS_PATH}/javascript/core.js?assets_version={T_ASSETS_VERSION}"</script>
 <!-- INCLUDEJS template/ajax.js -->
 {SCRIPTS}
 
diff --git a/phpBB/styles/prosilver/template/overall_header.html b/phpBB/styles/prosilver/template/overall_header.html
index 72fc9c89ab..24a045cae2 100644
--- a/phpBB/styles/prosilver/template/overall_header.html
+++ b/phpBB/styles/prosilver/template/overall_header.html
@@ -70,18 +70,18 @@
 
 // ]]>
 </script>
-<script type="text/javascript" src="{T_SUPER_TEMPLATE_PATH}/forum_fn.js"></script>
+<script type="text/javascript" src="{T_SUPER_TEMPLATE_PATH}/forum_fn.js?assets_version={T_ASSETS_VERSION}"></script>
 
-<link href="{T_THEME_PATH}/print.css" rel="stylesheet" type="text/css" media="print" title="printonly" />
+<link href="{T_THEME_PATH}/print.css?assets_version={T_ASSETS_VERSION}" rel="stylesheet" type="text/css" media="print" title="printonly" />
 <link href="{T_STYLESHEET_LINK}" rel="stylesheet" type="text/css" media="screen, projection" />
 <link href="{T_STYLESHEET_LANG_LINK}" rel="stylesheet" type="text/css" media="screen, projection" />
 
 <!-- IF S_CONTENT_DIRECTION eq 'rtl' -->
-	<link href="{T_THEME_PATH}/bidi.css" rel="stylesheet" type="text/css" media="screen, projection" />
+	<link href="{T_THEME_PATH}/bidi.css?assets_version={T_ASSETS_VERSION}" rel="stylesheet" type="text/css" media="screen, projection" />
 <!-- ENDIF -->
 
 <!--[if lte IE 8]>
-	<link href="{T_THEME_PATH}/tweaks.css" rel="stylesheet" type="text/css" media="screen, projection" />
+	<link href="{T_THEME_PATH}/tweaks.css?assets_version={T_ASSETS_VERSION}" rel="stylesheet" type="text/css" media="screen, projection" />
 <![endif]-->
 
 </head>