diff --git a/apps/establishment/management/commands/update_establishment_image_urls.py b/apps/establishment/management/commands/update_establishment_image_urls.py
index 397d4f0d..3256f18b 100644
--- a/apps/establishment/management/commands/update_establishment_image_urls.py
+++ b/apps/establishment/management/commands/update_establishment_image_urls.py
@@ -34,7 +34,7 @@ class Command(BaseCommand):
 
             task = update_establishment_image_urls.s(
                 (index + bucket_size) / bucket_size, summary_tasks,
-                bucket.values_list('id', flat=True)
+                list(bucket.values_list('id', flat=True))
             )
 
             tasks.append(task)