If you prefer an application with a special version installed in Ubuntu. It’s easy to keep this installation and stop Update Manager from suggesting a later version.
First install Synaptic Package Manager in Ubuntu Software, or use command:
sudo apt-get install synaptic
Then launch Synaptic and search this application. Just for example, I want vlc stay with the
currently installed version.
Highlight vlc and in ‘Package’ menu select ‘Lock Verion’. The package is locked and turns red.