GIT_SILENT: happy new year
Disclaimer: I am not a lawyer, so maybe I'm wrong, but a quick research supports my statements.
I'm sorry, but that's not how copyright works. You cannot simply increase the year (which, in U.S. copyright law, means the year of the first publication) without doing other changes. If you make "copyrightable" (e.g. more than fixing a typo or a simple dependency/version bump) changes, then you can increase the year because then the year reflects the year of the first publication of those changes. But just increasing the year without making any (copyrightable) changes is just wrong.
In fact, according to the Berne Convention "if the identity of the author becomes known, the copyright term for known authors (50 years after death) applies" (There are different rules for photography and cinematography which obviously do not apply to source code.). So, at least as far as the Berne Convention is concerned the year is completely irrelevant because only the year of your death is relevant.