Only allow Select One Django_tables2

I have a table that populates on using django_tables2, with two columns:

tables.py

class SummaryTable(tables.Table):

    update = CheckBoxColumnWithName(verbose_name = "Select",accessor="pk", 
                                   orderable=False)

    class Meta:
        model = Vehicle
        fields = ('update', 'vehid')

        # Add class="paleblue" to <table> tag
        attrs = {'class':'paleblue'}

Columns update and vehid.

What I need is to restrict the user to only select one checkbox, if they select another checkbox, it unselects the first and selects the new choice.

Can anyone advise how to do this?