Until now I had updated my system without any problem, now it is giving me this error.

root@clt-iyc-03:/mnt/datos/sistemas/linux# apt-get update
Des:1 file:/mnt/datos/sistemas/linux/devuan/beowulf beowulf InRelease [25,6 kB]
Des:1 file:/mnt/datos/sistemas/linux/devuan/beowulf beowulf InRelease [25,6 kB]
Leyendo lista de paquetes... Hecho
E: Repository 'file:/mnt/datos/sistemas/linux/devuan/beowulf beowulf InRelease' changed its 'Suite' value from 'testing' to 'stable'
N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.
root@clt-iyc-03:/mnt/datos/sistemas/linux#

How can I solve it?

I have tried in the source.list, but the problem persists
deb [allow-insecure=yes] file:///mnt/datos/sistemas/linux/devuan/beowulf/ beowulf main contrib non-free

Best Regards
--
Ismael
Devuan User: http://distrowatch.com/table.php?distribution=devuan
Web Site: http://www.sisconge.byethost15.com/