diff --git a/site/snippets/header.php b/site/snippets/header.php
index 0681fa2..81a3c8a 100644
--- a/site/snippets/header.php
+++ b/site/snippets/header.php
@@ -11,24 +11,26 @@
     <meta name="robots" content="noindex,nofollow">
     
     <!-- Alpine -->
-    <script defer src="https://cdn.jsdelivr.net/npm/alpinejs@3.x.x/dist/cdn.min.js"></script>
-  
+    <script async src="https://cdn.jsdelivr.net/npm/alpinejs@3.x.x/dist/cdn.min.js"></script>
+
     <!-- Calendar -->
     <?php if ($page->isHomePage() || $page->template() == 'event' || $page->template() == 'program'): ?>
       <!-- dayjs -->
-      <script src="https://cdn.jsdelivr.net/npm/dayjs@1/dayjs.min.js"></script>
-      <script src="https://cdn.jsdelivr.net/npm/dayjs@1/locale/fr.js"></script>
-      <script src="https://cdn.jsdelivr.net/npm/dayjs@1/plugin/weekOfYear.js"></script>
-      <?= js('/assets/js/calendar.js') ?>
+      <script async src="https://cdn.jsdelivr.net/npm/dayjs@1/dayjs.min.js"></script>
+      <script async src="https://cdn.jsdelivr.net/npm/dayjs@1/locale/fr.js"></script>
+      <script async src="https://cdn.jsdelivr.net/npm/dayjs@1/plugin/weekOfYear.js"></script>
+      <script async src="<?= url('/assets/js/calendar.js') ?>"></script>
     <?php endif ?>
-    
+
     <!-- Swiper -->
     <?php if ($page->template() == 'event'): ?>
         <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.css" defer />
-        <script src="https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js" defer></script>
-        <script src="<?= url('assets/js/swiper.js') ?>" defer></script>
+        <script defer src="https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js"></script>
+        <script defer src="<?= url('assets/js/swiper.js') ?>"></script>
     <?php endif ?>
-    <script src="<?= url('assets/js/script.js') ?>" type="module" defer></script>
+
+    <!-- script.js -->
+    <script defer src="<?= url('assets/js/script.js') ?>" type="module"></script>
     
     <style>
       :root {