(5.40 started complaining, and we are not Debian ;)
From upstream's changelog:
5.43 01-Jul-2019
New hacks, GravityWell, DeepStars.
GLPlanet now supports the Mercator projection.
Bouncing Cow has mathematically ideal cows (spherical, frictionless).
Foggy toasters.
Unknown Pleasures can now use an image file as a clip mask.
Updated webcollage for recent changes.
macOS: Fixed BSOD fonts on UWQHD+ displays.
X11: Added some sample unlock dialog color schemes to the .ad file.
X11: On systemd systems, closing your laptop lid might actually
lock your screen now, maybe.
X11: 'sonar' can ping without being setuid by using setcap.
5.42 28-Dec-2018
macOS: Fixed Sparkle auto-updater.
5.41 26-Dec-2018
X11: Those new font-loading fallback heuristics work again. Oops.
iOS, Android: Plugged many memory leaks at exit.
New hack, handsy.
Fixed noof from displaying minimalistically.
Rewrote unknownpleasures to be faster, and a true waterfall graph.
BSOD Solaris improved. DVD added.
Linux: If the xscreensaver daemon is setuid, then we can implore
the kernel's out-of-memory killer to pretty please not unlock the
screen.
macOS: Upgraded Sparkle (the "Check for Updates" library).
macOS: Screen saver settings work again on 10.14.