ca-certificates

ca-certificates is a package containing certificates provided by trusted Certificate Authorities.

Check

apt list --installed ca-certificates

dnf list --installed ca-certificates

Install

As 'root', or by prefixing with sudo...

apt update

apt install ca-certificates

As 'root', or by prefixing with sudo...

dnf install ca-certificates

Upgrade

As 'root', or by prefixing with sudo...

apt update

apt upgrade ca-certificates

Bibliography