I don't understand how I can upgrade my CentOS 7. cat /etc/redhat-release CentOS Linux release 7.7.1908 (Core) I followed the directions found on the web (by installing dnf and so on), but when I tried to install centos-release I get dnf upgrade -y http://mirror.centos.org/centos/8/BaseOS/x86_64/os/Packages/centos-release-8.1-1.1911.0.9.el8.x86_64.rpm Last metadata expiration check: 0:19:05 ago on Wed 08 Apr 2020 04:50:14 PM CEST. centos-release-8.1-1.1911.0.9.el8.x86_64.rpm 184 kB/s | 21 kB 00:00 Dependencies resolved. Problem: cannot install the best update candidate for package centos-release-7-7.1908.0.el7.centos.x86_64 - nothing provides centos-gpg-keys = 8.1-1.1911.0.9.el8 needed by centos-release-8.1-1.1911.0.9.el8.x86_64 - nothing provides centos-repos = 8.1-1.1911.0.9.el8 needed by centos-release-8.1-1.1911.0.9.el8.x86_64 ================================================================================================================================= Package Arch Version Repository Size ================================================================================================================================= Skipping packages with broken dependencies: centos-release x86_64 8.1-1.1911.0.9.el8 @commandline 21 k Transaction Summary ================================================================================================================================= Skip 1 Package Nothing to do. Complete! Does anyone know how to upgrade? Thanks Stefano