diff --git a/eboutic/static/bundled/eboutic/eboutic-index.ts b/eboutic/static/bundled/eboutic/eboutic-index.ts
index f31e5088..56597387 100644
--- a/eboutic/static/bundled/eboutic/eboutic-index.ts
+++ b/eboutic/static/bundled/eboutic/eboutic-index.ts
@@ -9,7 +9,7 @@ interface BasketItem {
 }
 
 document.addEventListener("alpine:init", () => {
-  Alpine.data("basket", () => ({
+  Alpine.data("basket", (lastPurchaseTime?: number) => ({
     basket: [] as BasketItem[],
 
     init() {
@@ -18,6 +18,16 @@ document.addEventListener("alpine:init", () => {
         this.saveBasket();
       });
 
+      // Invalidate basket if a purchase was made
+      if (lastPurchaseTime !== null && localStorage.basketTimestamp !== undefined) {
+        if (
+          new Date(lastPurchaseTime) >=
+          new Date(Number.parseInt(localStorage.basketTimestamp))
+        ) {
+          this.basket = [];
+        }
+      }
+
       // It's quite tricky to manually apply attributes to the management part
       // of a formset so we dynamically apply it here
       this.$refs.basketManagementForm
@@ -38,6 +48,7 @@ document.addEventListener("alpine:init", () => {
 
     saveBasket() {
       localStorage.basket = JSON.stringify(this.basket);
+      localStorage.basketTimestamp = Date.now();
     },
 
     /**
diff --git a/eboutic/templates/eboutic/eboutic_main.jinja b/eboutic/templates/eboutic/eboutic_main.jinja
index 826e78e3..bca15fa2 100644
--- a/eboutic/templates/eboutic/eboutic_main.jinja
+++ b/eboutic/templates/eboutic/eboutic_main.jinja
@@ -21,7 +21,7 @@
 
 {% block content %}
   <h1 id="eboutic-title">{% trans %}Eboutic{% endtrans %}</h1>
-  <div id="eboutic" x-data="basket">
+  <div id="eboutic" x-data="basket({{ last_purchase_time }})">
     <div id="basket">
       <h3>Panier</h3>
       <form method="post" action="">
diff --git a/eboutic/views.py b/eboutic/views.py
index 40ff7255..8abd9ea2 100644
--- a/eboutic/views.py
+++ b/eboutic/views.py
@@ -48,7 +48,7 @@ from django_countries.fields import Country
 from core.auth.mixins import CanViewMixin, IsSubscriberMixin
 from core.views.mixins import FragmentMixin, UseFragmentsMixin
 from counter.forms import BaseBasketForm, BillingInfoForm, ProductForm
-from counter.models import BillingInfo, Counter, Customer, Product
+from counter.models import BillingInfo, Counter, Customer, Product, Selling
 from eboutic.models import (
     Basket,
     BasketItem,
@@ -89,7 +89,7 @@ class EbouticMainView(LoginRequiredMixin, FormView):
     def get_form_kwargs(self):
         kwargs = super().get_form_kwargs()
         kwargs["form_kwargs"] = {
-            "customer": Customer.get_or_create(self.request.user)[0],
+            "customer": self.customer,
             "counter": Counter.objects.get(type="EBOUTIC"),
             "allowed_products": {product.id: product for product in self.products},
         }
@@ -116,10 +116,22 @@ class EbouticMainView(LoginRequiredMixin, FormView):
     def products(self) -> list[Product]:
         return get_eboutic_products(self.request.user)
 
+    @cached_property
+    def customer(self) -> Customer:
+        return Customer.get_or_create(self.request.user)[0]
+
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
         context["products"] = self.products
         context["customer_amount"] = self.request.user.account_balance
+        last_purchase: Selling | None = (
+            self.customer.buyings.filter(counter__type="EBOUTIC")
+            .order_by("-date")
+            .first()
+        )
+        context["last_purchase_time"] = (
+            int(last_purchase.date.timestamp() * 1000) if last_purchase else "null"
+        )
         return context