Resolución de errores simples “The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key” que aparece cuando intenta actualizar paquetes en los sistemas Debian.

Err:10 https://packages.sury.org/php bullseye InRelease
  The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key <[email protected]>
Fetched 14.1 kB in 1s (14.5 kB/s)
Reading package lists... Done
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://packages.sury.org/php bullseye InRelease: The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key <[email protected]>
W: Failed to fetch https://packages.sury.org/php/dists/bullseye/InRelease  The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key <[email protected]>
W: Some index files failed to download. They have been ignored, or old ones used instead.

Este error también evita la actualización de los paquetes en los servidores Debian con Wordops. (wo stack upgrade).

Relacionado: Cómo instalar y configurar LEMP en Debian 12

The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key

Este error aparece porque Sury.org cambió la clave a la firma digital para Debian, y para remediar el problema que debe descargar la nueva clave.

apt-key adv --fetch-keys https://packages.sury.org/php/apt.gpg

Una vez que ejecute este pedido, puede actualizar todos los paquetes Debian:

apt update && apt upgrade

Aquellos que usen Wordops ejecutarán la línea de comando:

wo stack upgrade

Todo funcionará sin problemas para actualizar los paquetes en Debian.