Hinged Bangle Catch Options

[Jojo]

Hi all, I have a customer's hinged bangle that keeps coming coming back -

we have repaired the (traditional) "tongue" style catch a couple of times, & it's just not holding - it is 9ct yellow gold, probably hollow, although it is quite sturdy, but I need to come up with a different catch idea now, to replace the existing - does anyone have any suggestions please?