diff --git a/includes/header.php b/includes/header.php
index 7c44065..189c42a 100644
--- a/includes/header.php
+++ b/includes/header.php
@@ -74,7 +74,7 @@ $customerUser = $isLoggedIn ? CustomerAuth::getUser() : null;
     <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css">
     
     <!-- Styles -->
-    <link rel="stylesheet" href="/assets/css/style.css">
+    <link rel="stylesheet" href="/assets/css/style.css?v=<?= filemtime($_SERVER['DOCUMENT_ROOT'] . '/assets/css/style.css') ?>">
     
     <!-- Favicon -->
     <link rel="icon" href="/assets/images/logo.png" type="image/png">