How to install slocate in Ubuntu

I have seen several references to the slocate command [\[1\]][1] [\[2\]][2] as a more secure alternative to the locate command. However I cannot install it using sudo apt install slocate. I also cannot find any references on how to install it for Ubuntu and only one reference to installing it on any Linux platform at all . But here is a question about how to use it and it is also referenced in official Ubuntu manual . So, why is it referenced, but not available? Must it be installed from source only ?