Не удалось обновить подпись grub-efi-amd64

The following packages have been kept back: grub-efi-amd64-signed

У меня эта ошибка в течение пары недель. Кто-нибудь знает причину?

Изменить:

laserpirate@base:~$ sudo apt update
Reading package lists... Done                     
Building dependency tree       
Reading state information... Done
1 package can be upgraded. Run 'apt list --upgradable' to see it.
laserpirate@base:~$ sudo apt upgrade 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
grub-efi-amd64-signed
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
laserpirate@base:~$ sudo apt dist-upgrade 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
grub-efi-amd64-signed
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
laserpirate@base:~$