|   | 1 |  initial version  | 
Hopefully, the next Ubuntu LTS version (22.04), to be released in April, will contain an up to date SageMath (probably version 9.5). Meanwhile, you can still download the SageMath 9.4 binary for Ubuntu 20.04 by selecting a mirror from https://www.sagemath.org/download.html. For instance: https://www-ftp.lip6.fr/pub/math/sagemath/linux/64bit/index.html
Note that you have to install the Ubuntu package python-is-python3 first. 
 Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.
 
                
                Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.