diff --git a/src/usr/local/www/foot.inc b/src/usr/local/www/foot.inc
index 5037860ef2..06764d3ff0 100644
--- a/src/usr/local/www/foot.inc
+++ b/src/usr/local/www/foot.inc
@@ -37,13 +37,15 @@
 		</div>
 	</footer>
 
-	<script src="/vendor/jquery/jquery-1.12.0.min.js"></script>
-	<script src="/vendor/jquery/jquery-ui-1.11.4.min.js"></script>
-	<script src="/vendor/bootstrap/js/bootstrap.min.js"></script>
-	<script src="/js/pfSense.js"></script>
-	<script src="/js/pfSenseHelpers.js"></script>
-	<script src="/js/polyfills.js"></script>
-	<script src="/vendor/sortable/sortable.js"></script>
+	<!-- This use of filemtime() is intended to fool the browser into reloading the file (not using the cached version) if the file is changed -->
+
+	<script src="/vendor/jquery/jquery-1.12.0.min.js?v=<?=filemtime('/usr/local/www/vendor/jquery/jquery-1.12.0.min.js')?>"></script>
+	<script src="/vendor/jquery/jquery-ui-1.11.4.min.js?v=<?=filemtime('/usr/local/www/vendor/jquery/jquery-ui-1.11.4.min.js')?>"></script>
+	<script src="/vendor/bootstrap/js/bootstrap.min.js?v=<?=filemtime('/usr/local/www/vendor/bootstrap/js/bootstrap.min.js')?>"></script>
+	<script src="/js/pfSense.js?v=<?=filemtime('/usr/local/www/js/pfSense.js')?>"></script>
+	<script src="/js/pfSenseHelpers.js?v=<?=filemtime('/usr/local/www/js/pfSenseHelpers.js')?>"></script>
+	<script src="/js/polyfills.js?v=<?=filemtime('/usr/local/www/js/polyfills.js')?>"></script>
+	<script src="/vendor/sortable/sortable.js?v=<?=filemtime('/usr/local/www/vendor/sortable/sortable.js')?>"></script>
 
 	<script type="text/javascript">
 	//<![CDATA[
diff --git a/src/usr/local/www/head.inc b/src/usr/local/www/head.inc
index 297ec5a37b..27fb8f71cc 100644
--- a/src/usr/local/www/head.inc
+++ b/src/usr/local/www/head.inc
@@ -54,9 +54,10 @@ if (!isset($config['system']['webgui']['dashboardcolumns'])) {
 <html lang="en">
 <head>
 	<meta name="viewport" content="width=device-width, initial-scale=1">
-	<link rel="stylesheet" href="/vendor/font-awesome/css/font-awesome.min.css">
-	<link rel="stylesheet" href="/vendor/sortable/sortable-theme-bootstrap.css">
-	<link rel="stylesheet" href="<?=$cssfile?>" />
+	<link rel="stylesheet" href="/vendor/font-awesome/css/font-awesome.min.css?v=<?=filemtime('/usr/local/www/vendor/font-awesome/css/font-awesome.min.css')?>">
+	<link rel="stylesheet" href="/vendor/sortable/sortable-theme-bootstrap.css?v=<?=filemtime('/usr/local/www/vendor/sortable/sortable-theme-bootstrap.css')?>">
+	<link rel="stylesheet" href="<?=$cssfile?>?v=<?=filemtime('/usr/local/www/' . $cssfile)?>" />
+
 	<title><?=$tabtitle?></title>
 	<script type="text/javascript">
 	//<![CDATA[
