diff --git a/engine/apps/api/serializers/schedule_polymorphic.py b/engine/apps/api/serializers/schedule_polymorphic.py
index 9da80611..382054d8 100644
--- a/engine/apps/api/serializers/schedule_polymorphic.py
+++ b/engine/apps/api/serializers/schedule_polymorphic.py
@@ -12,7 +12,7 @@ from common.api_helpers.mixins import EagerLoadingMixin
 
 
 class PolymorphicScheduleSerializer(EagerLoadingMixin, PolymorphicSerializer):
-    SELECT_RELATED = ["organization"]
+    SELECT_RELATED = ["organization", "user_group"]
 
     resource_type_field_name = "type"