How much do I have to change in my own work to make a new claim of copyright?

Question: How much do I have to change in my own work to make a new claim of copyright?

Answer: You may make a new claim in your work if the changes are substantial and creative, something more than just editorial changes or minor changes. This would qualify as a new derivative work. For instance, simply making spelling corrections throughout a work does not warrant a new registration, however, adding an additional chapter would.