diff --git a/docs/authorization.rst b/docs/authorization.rst
index bc88cda..57817eb 100644
--- a/docs/authorization.rst
+++ b/docs/authorization.rst
@@ -144,6 +144,16 @@ If you are using ``DjangoObjectType`` you can define a custom `get_queryset`.
                 return queryset.filter(published=True)
             return queryset
 
+.. warning::
+
+    Defining a custom ``get_queryset`` gives the guaranteed it will be called
+    when resolving the ``DjangoObjectType``, even through related objects.
+    Note that because of this, benefits from using ``select_related``
+    in objects that define a relation to this ``DjangoObjectType`` will be canceled out.
+    In the case of ``prefetch_related``, the benefits of the optimization will be lost only
+    if the custom ``get_queryset`` modifies the queryset. For more information about this, refers
+    to Django documentation about ``prefetch_related``: https://docs.djangoproject.com/en/4.2/ref/models/querysets/#prefetch-related.
+
 
 Filtering ID-based Node Access
 ------------------------------