Check your licences: The FSF has a new physical address
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
I can't actually say when they moved, but Petr Pisar has kindly informed me it is so, and he's fastidious about such things.
And, yes, here in Australia we really do spell licence as, er ... well, licence.
I try to write all code in Perl, but find I end up writing in bash, CSS, HTML, JS, and SQL, and doing database design, just to get anything done...
Looks like it has changed a few times:
https://github.com/Perl-Toolchain-Gang/Software-License/commit/4791501d7
https://github.com/Perl-Toolchain-Gang/Software-License/commit/d0ef095e5
https://github.com/Perl-Toolchain-Gang/Software-License/commit/20cf49ac2
https://github.com/Perl-Toolchain-Gang/Software-License/commit/2d829d54b
Before everyone hurries to update the licence text, notice that FSF moved at this address back in 2005 (or even earlier, but definitely before January 2006).
One reason NOT to have a physical address in a license.