It’s important to keep a will up-to-date. If you wish to make changes to your will, you can create a new will or use a codicil to add changes to your existing will.
Either a codicil or a new will require a signature and the signatures of two (or more) witnesses to be legally binding.
A codicil is a good option if you want to make small changes. Creating a new will can clear up confusion and it’s more appropriate for larger changes like changing your beneficiaries.