diff --git a/includes/footer.php b/includes/footer.php
index ecacb3d..9e4f6f3 100644
--- a/includes/footer.php
+++ b/includes/footer.php
@@ -71,7 +71,7 @@
         </div>
     </footer>
     
-    <script src="/assets/js/main.js"></script>
+    <script src="/assets/js/main.js?v=<?= filemtime($_SERVER['DOCUMENT_ROOT'] . '/assets/js/main.js') ?>"></script>
     
     <!-- PWA Service Worker Registration -->
     <script>
diff --git a/shop.php b/shop.php
index 553ce1f..a7502c4 100644
--- a/shop.php
+++ b/shop.php
@@ -190,7 +190,7 @@ $productTypesList = db()->fetchAll("SELECT type_id, name, slug FROM product_type
                                     <span class="original"><?= formatCurrency($product['price']) ?></span>
                                 <?php endif; ?>
                             </div>
-                            <button class="btn btn-primary btn-block add-to-cart-btn" data-product-id="<?= $product['product_id'] ?>">
+                            <button class="btn btn-primary btn-block add-to-cart-btn" data-product-id="<?= $product['product_id'] ?>" onclick="addToCart('<?= $product['product_id'] ?>', 1)">
                                 <i class="fas fa-shopping-bag"></i> Add to Cart
                             </button>
                         </div>