diff --git a/html/html/themes/ipfire/include/functions.pl b/html/html/themes/ipfire/include/functions.pl
index 27693bcb3..5ea3f9fa7 100644
--- a/html/html/themes/ipfire/include/functions.pl
+++ b/html/html/themes/ipfire/include/functions.pl
@@ -125,7 +125,7 @@ print <<END;
 END
 
 
-print "<link href=\"/themes/ipfire/include/css/style.css\" rel=\"stylesheet\" type=\"text/css\" />\n";
+print "<link href=\"/themes/ipfire/include/css/style.css?v=20240125\" rel=\"stylesheet\" type=\"text/css\" />\n";
 
 
 if ($settings{'SPEED'} ne 'off') {