diff --git a/core/migrations/0051_stock_system_attributes.py b/core/migrations/0051_stock_system_attributes.py
index ffe61cf4..1ebd81b7 100644
--- a/core/migrations/0051_stock_system_attributes.py
+++ b/core/migrations/0051_stock_system_attributes.py
@@ -4,15 +4,14 @@ from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
-
     dependencies = [
-        ('core', '0050_remove_attribute_categories'),
+        ("core", "0050_remove_attribute_categories"),
     ]
 
     operations = [
         migrations.AddField(
-            model_name='stock',
-            name='system_attributes',
-            field=models.JSONField(default=dict, verbose_name='system attributes'),
+            model_name="stock",
+            name="system_attributes",
+            field=models.JSONField(default=dict, verbose_name="system attributes"),
         ),
     ]
diff --git a/core/sitemaps.py b/core/sitemaps.py
index 24db6dfc..62f49c17 100644
--- a/core/sitemaps.py
+++ b/core/sitemaps.py
@@ -91,7 +91,16 @@ class CategorySitemap(SitemapLanguageMixin, Sitemap):  # type: ignore [type-arg]
     limit = 10000
 
     def items(self):
-        return Category.objects.filter(is_active=True).only("uuid", "name", "modified").order_by("-modified")
+        return (
+            Category.objects.filter(is_active=True)
+            .only(
+                "uuid",
+                "name",
+                "modified",
+                "slug",
+            )
+            .order_by("-modified")
+        )
 
     def lastmod(self, obj):
         return obj.modified
@@ -107,7 +116,16 @@ class BrandSitemap(SitemapLanguageMixin, Sitemap):  # type: ignore [type-arg]
     limit = 10000
 
     def items(self):
-        return Brand.objects.filter(is_active=True).only("uuid", "name", "modified").order_by("-modified")
+        return (
+            Brand.objects.filter(is_active=True)
+            .only(
+                "uuid",
+                "name",
+                "modified",
+                "slug",
+            )
+            .order_by("-modified")
+        )
 
     def lastmod(self, obj):
         return obj.modified