https://www.gnu.org/licenses/gpl-howto.html
For programs that are more than one file, it is better to replace “this program” with the name of the program, and begin the statement with a line saying “This file is part of NAME”. For instance,
This file is part of Foobar.
Foobar is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Foobar is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Foobar. If not, see <https://www.gnu.org/licenses/>.
https://leftypol.org/tech/res/7090.html
If you haven't done so the last time, switch all your projects from (A)GPLv3+ to (A)GPLv3 exactly, since a subverted GPL published swiftly after an FSF takeover is the obvious endgame.