diff --git a/website_sale_aplicoop/__manifest__.py b/website_sale_aplicoop/__manifest__.py
index 1b29beb..9bc2aaf 100644
--- a/website_sale_aplicoop/__manifest__.py
+++ b/website_sale_aplicoop/__manifest__.py
@@ -3,7 +3,7 @@
 
 {  # noqa: B018
     "name": "Website Sale - Aplicoop",
-    "version": "18.0.1.10.0",
+    "version": "18.0.1.10.1",
     "category": "Website/Sale",
     "summary": "Modern replacement of legacy Aplicoop - Collaborative consumption group orders",
     "author": "Odoo Community Association (OCA), Criptomart",
diff --git a/website_sale_aplicoop/controllers/website_sale.py b/website_sale_aplicoop/controllers/website_sale.py
index a9d6894..315143a 100644
--- a/website_sale_aplicoop/controllers/website_sale.py
+++ b/website_sale_aplicoop/controllers/website_sale.py
@@ -641,6 +641,16 @@ class AplicoopWebsiteSale(WebsiteSale):
     def _decode_json_body(self):
         return _utils._decode_json_body(self, request)
 
+    def _get_installed_module_version(self):
+        """Return the installed version of this addon, used as a build-id
+        signal so the frontend can detect a deploy and force a reload."""
+        module = (
+            request.env["ir.module.module"]
+            .sudo()
+            .search([("name", "=", "website_sale_aplicoop")], limit=1)
+        )
+        return module.installed_version or ""
+
     def _build_group_order_unavailable_response(self, group_order, status=403):
         """Delegate building of unavailable response to utils helper."""
         self._request = request
@@ -827,6 +837,7 @@ class AplicoopWebsiteSale(WebsiteSale):
                 "current_page": page,
                 "has_next": has_next,
                 "total_products": total_products,
+                "module_version": self._get_installed_module_version(),
             },
         )
 
@@ -1370,6 +1381,7 @@ class AplicoopWebsiteSale(WebsiteSale):
             ),
             "cutoff_passed": cutoff_passed,
             "cutoff_date": cutoff_date_str,
+            "client_version": self._get_installed_module_version(),
         }
         return request.make_response(
             json.dumps(response_data),
diff --git a/website_sale_aplicoop/static/src/js/website_sale.js b/website_sale_aplicoop/static/src/js/website_sale.js
index 15076c0..a51ead4 100644
--- a/website_sale_aplicoop/static/src/js/website_sale.js
+++ b/website_sale_aplicoop/static/src/js/website_sale.js
@@ -45,6 +45,13 @@
 
             console.log("Initializing cart for order:", this.orderId);
 
+            // Capture the build version embedded in the rendered HTML. The
+            // server returns its installed version in /eskaera/check-status,
+            // and if the two disagree we know a deploy happened and the
+            // current page is running stale JS — force a one-shot reload.
+            this._buildVersion = orderIdElement.getAttribute("data-build-version") || null;
+            console.log("[groupOrderShop] Build version:", this._buildVersion);
+
             // Attach event listeners FIRST (doesn't depend on translations)
             this._attachEventListeners();
             console.log("[groupOrderShop] Event listeners attached");
@@ -513,6 +520,35 @@
             console.log("[groupOrderShop] Cart cleared silently for order:", this.orderId);
         },
 
+        // Avoid a reload loop if for any reason (HTML cached upstream, etc.)
+        // the build versions keep disagreeing after a reload.
+        _shouldReloadForNewBuild: function () {
+            try {
+                var raw = sessionStorage.getItem("eskaera_build_reload_at");
+                if (!raw) {
+                    return true;
+                }
+                var last = parseInt(raw, 10);
+                if (isNaN(last)) {
+                    return true;
+                }
+                // If we already reloaded in the last 30s, don't try again.
+                return Date.now() - last > 30000;
+            } catch (e) {
+                return true;
+            }
+        },
+
+        _markReloadAttempt: function () {
+            try {
+                sessionStorage.setItem("eskaera_build_reload_at", String(Date.now()));
+            } catch (e) {
+                // sessionStorage unavailable — fail open; worst case we get a
+                // single extra reload, never a loop because the next render
+                // will carry the new version.
+            }
+        },
+
         _isClosedOrderResponse: function (xhr) {
             if (!xhr) {
                 return false;
@@ -555,6 +591,27 @@
                 }
                 try {
                     var data = JSON.parse(xhr.responseText || "{}");
+                    // Deploy-detection: server tells us the installed module
+                    // version; if it differs from the version embedded in
+                    // the HTML, we are running stale JS — reload once.
+                    if (
+                        data &&
+                        data.client_version &&
+                        self._buildVersion &&
+                        data.client_version !== self._buildVersion &&
+                        self._shouldReloadForNewBuild()
+                    ) {
+                        console.warn(
+                            "[groupOrderShop] Build mismatch (page=" +
+                                self._buildVersion +
+                                ", server=" +
+                                data.client_version +
+                                "), reloading"
+                        );
+                        self._markReloadAttempt();
+                        window.location.reload();
+                        return;
+                    }
                     // Capture current cycle marker so _loadCart can evict a
                     // localStorage cart that belongs to a previous cycle.
                     self._currentCutoffDate = data && data.cutoff_date ? data.cutoff_date : null;
diff --git a/website_sale_aplicoop/views/website_templates.xml b/website_sale_aplicoop/views/website_templates.xml
index 66f266d..3d4d6ac 100644
--- a/website_sale_aplicoop/views/website_templates.xml
+++ b/website_sale_aplicoop/views/website_templates.xml
@@ -337,7 +337,7 @@
                                             </button>
                                         </div>
                                     </div>
-                                    <div class="card-body cart-body-lg" id="cart-items-container" t-attf-data-order-id="{{ group_order.id }}" aria-labelledby="cart-title" aria-live="polite" aria-relevant="additions removals">
+                                    <div class="card-body cart-body-lg" id="cart-items-container" t-attf-data-order-id="{{ group_order.id }}" t-attf-data-build-version="{{ module_version }}" aria-labelledby="cart-title" aria-live="polite" aria-relevant="additions removals">
                                         <p class="text-muted">This order's cart is empty</p>
                                     </div>
                                     <div class="card-footer bg-white d-flex justify-content-between align-items-center gap-2">