[Stable Update] 2026-03-23 - Kernels, Mesa, COSMIC, GNOME, Systemd, Plasma

Hey there. The update went smoothly on two out of three machines.
On my last machine, I’m struggling with the following problem, which I haven’t been able to fix yet:

error: highway: signature from "Daniel Bermond <dbermond@archlinux.org>" is marginal trust
:: File /var/cache/pacman/pkg/highway-1.3.0-1-x86_64.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] y
error: libjxl: signature from "Daniel Bermond <dbermond@archlinux.org>" is marginal trust
:: File /var/cache/pacman/pkg/libjxl-0.11.1-5-x86_64.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] y
error: libvpl: signature from "Daniel Bermond <dbermond@archlinux.org>" is marginal trust
:: File /var/cache/pacman/pkg/libvpl-2.16.0-1-x86_64.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] y
error: libmfx: signature from "Daniel Bermond <dbermond@archlinux.org>" is marginal trust
:: File /var/cache/pacman/pkg/libmfx-23.2.2-5-x86_64.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] y
error: gsfonts: signature from "Daniel Bermond <dbermond@archlinux.org>" is marginal trust
:: File /var/cache/pacman/pkg/gsfonts-20200910-6-any.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] y
error: mujs: signature from "Daniel Bermond <dbermond@archlinux.org>" is marginal trust
:: File /var/cache/pacman/pkg/mujs-1.3.8-1-x86_64.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] y
error: pkgfile: signature from "Daniel Bermond <dbermond@archlinux.org>" is marginal trust
:: File /var/cache/pacman/pkg/pkgfile-25-1-x86_64.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] y
error: failed to commit transaction (invalid or corrupted package)
Errors occurred, no packages were upgraded.

It’s exactly the same problem as described in the following forum post: Marginal Trust invalid or corrupt package Error while updating manjaro

Does anyone have any idea how to fix this error? Thanks in advance.