diff --git a/src/modules/orders/interface/order-status.ts b/src/modules/orders/interface/order-status.ts
index d3bddb4..935e0b4 100644
--- a/src/modules/orders/interface/order-status.ts
+++ b/src/modules/orders/interface/order-status.ts
@@ -1,20 +1,25 @@
 import type { CouponType } from 'src/modules/coupons/interface/coupon';
 
 export enum OrderStatus {
+  // Initial status
   Pending = 'pending',
 
+  // Cancellation statuses
+  CancelledBySystem = 'cancelledBySystem',
+  CancelledByUser = 'cancelledByUser',
+  RejectedByRestaurant = 'rejectedByRestaurant',
+
+  // Active processing statuses
   Confirmed = 'confirmed',
   Preparing = 'preparing',
 
-  RejectedByRestaurant = 'rejectedByRestaurant',
-  CancelledByUser = 'cancelledByUser',
-  CancelledBySystem = 'cancelledBySystem',
-
+  // Ready for pickup/delivery statuses
   ReadyForCustomerPickup = 'readyForCustomerPickup',
   ReadyForDineIn = 'readyForDineIn',
   ReadyForDeliveryCar = 'readyForDeliveryCar',
   ReadyForDeliveryCourier = 'readyForDeliveryCourier',
 
+  // Final status
   Delivered = 'delivered',
 }
 
diff --git a/src/modules/orders/orders.controller.ts b/src/modules/orders/orders.controller.ts
index 6f25add..2ac5a28 100644
--- a/src/modules/orders/orders.controller.ts
+++ b/src/modules/orders/orders.controller.ts
@@ -98,4 +98,13 @@ export class OrdersController {
   readyForPickup(@Param('orderId') orderId: string, @RestId() restId: string) {
     return this.ordersService.readyForDelivery(orderId, restId);
   }
+
+  @UseGuards(AdminAuthGuard)
+  @ApiBearerAuth()
+  @Patch('admin/orders/:orderId/delivered')
+  @ApiOperation({ summary: 'Mark an order as delivered' })
+  @ApiParam({ name: 'orderId', description: 'Order ID' })
+  markAsDelivered(@Param('orderId') orderId: string, @RestId() restId: string) {
+    return this.ordersService.markAsDelivered(orderId, restId);
+  }
 }
diff --git a/src/modules/orders/orders.service.ts b/src/modules/orders/orders.service.ts
index edd74cd..e2dfeb7 100644
--- a/src/modules/orders/orders.service.ts
+++ b/src/modules/orders/orders.service.ts
@@ -287,7 +287,10 @@ export class OrdersService {
     if (!order) {
       throw new NotFoundException('Order not found');
     }
-    order.status = OrderStatus.Confirmed;
+    if (order.status !== OrderStatus.Confirmed) {
+      throw new BadRequestException('Order must be confirmed before preparing');
+    }
+    order.status = OrderStatus.Preparing;
     await this.em.persistAndFlush(order);
     return order;
   }
@@ -344,6 +347,30 @@ export class OrdersService {
     return order;
   }
 
+  async markAsDelivered(orderId: string, restId: string) {
+    const order = await this.em.findOne(Order, { id: orderId, restaurant: { id: restId } });
+    if (!order) {
+      throw new NotFoundException('Order not found');
+    }
+
+    const readyStatuses = [
+      OrderStatus.ReadyForCustomerPickup,
+      OrderStatus.ReadyForDineIn,
+      OrderStatus.ReadyForDeliveryCar,
+      OrderStatus.ReadyForDeliveryCourier,
+    ];
+
+    if (!readyStatuses.includes(order.status)) {
+      throw new BadRequestException(
+        `Order must be in a ready status to mark as delivered. Current status: ${order.status}`,
+      );
+    }
+
+    order.status = OrderStatus.Delivered;
+    await this.em.persistAndFlush(order);
+    return order;
+  }
+
   /**
    * Cleanup job to handle abandoned orders (pending payment for >30 minutes)
    * Runs every 10 minutes to check for abandoned orders