9 Month Old Tries to Unbuckle Carseat

Kay

My girl has learned how her buckles in the car seat work. Luckily right now shes not strong enough to actually unbuckle but here soon she may be able too. How can I nip this in the butt? Or is there something I can safely use to cover the buckles to prevent this in the future? Obviously this can be dangerous once she can actually press the buttons to unbuckle.