How can I use django-filter’s DateTimeFromToRangeFilter with Graphene?

I’m attempting to use an instance of django-filter’s DateTimeFromToRangeFilter in conjunction with a custom FilterSet. However, this does not work when I attempt to do the following:

class CustomFilterSet(FilterSet):
    modified = django_filters.IsoDateTimeFromToRangeFilter()

    class Meta:
        fields = "__all__"
        model = Custom

This does not result in additional fields or annotations being created, like I’d expect based on the docs. Something like:

f = F({'modified_after': '...', 'modified_before': '...'})

If I inspect the single field (modified) which has been added to my DjangoFilterConnectionField, I see the following:

{'creation_counter': 395, 'name': None, '_type': <String meta=<ScalarOptions name='String'>>, 'default_value': Undefined, 'description': None, 'deprecation_reason': None}

So, how do I configure this filter such that I can write a query like the following?

query {
    allTheSmallThings(
        modified_before: "2023-09-26 17:21:22.921692+00:00"
    ) {
        edges {
            node {
                id
            }
        }
    }
}