Maybe it’s not convenient enough for you or doesn’t have the options you need, but if it fits, it’ll be easier to update than MakeMKV. (As a sidenote and just in case, to rip DVDs (not sure about Blu-Rays) to a video file, you can try Handbrake from the repos. Looking at the official site, it looks like it’s only officially available for Windows and MacOS, with the Linux version being handled by the community on their forums. Now, if you want to upgrade MakeMKV, we first need to know how you installed it in the first place, as it doesn’t seem that it’s ever been in the Ubuntu repos.
Of course, this is only the policy for the official repos managed by Canonical, there are various other ways to update softwares (the most common being various 3rd-party repos like PPAs where people provide updated packages). MakeMKV you can run in Windows, Linux or Mac. The software player provides the Host key and certificate, whereas the drive contains a list of the Host key/certificates that have been revoked. MakeMKV typically works on everything I try where DVDFab has failed on some newer titles. The latest MKB is version 70, and many discs actually share the same MKB. MakeMKV is a lot lighter in that there isnt 20 different modules that all want you to pay for them. You get new versions when you upgrade to the next Ubuntu version. MakeMKV is free provided you have the beta key or you pay like 50 one time for the software. Apart from a few specific apps (like Firefox) and security fixes, the applications available from the Ubuntu repos don’t get updates. The policy for software updates on Ubuntu is basically: there aren’t. What do you mean by “expired”? It stopped working? There’s a new version available?