diff --git a/core/tickets/serializers.py b/core/tickets/serializers.py
index d7f89df..00acff6 100644
--- a/core/tickets/serializers.py
+++ b/core/tickets/serializers.py
@@ -122,6 +122,13 @@ class IssueSerializer(serializers.ModelSerializer):
                 'timestamp': relation.timestamp,
                 'item': ItemSerializer(relation.item).data,
             })
+        for shipping_code in obj.shipping_codes.all():
+            timeline.append({
+                'type': 'shipping_code',
+                'id': shipping_code.id,
+                'timestamp': shipping_code.used_at,
+                'code': ShippingCodeSerializer(shipping_code).data,
+            })
         return sorted(timeline, key=lambda x: x['timestamp'])
 
     def get_queryset(self):