Try the new update command. It's as simple as:
$ ./elefant backup ~/backups/ $ ./elefant update
Elefant 2 Beta (v1.3.9)
Elefant 1.2 Stable (v1.2.2)
For all downloads, see our Github downloads page.
For an explanation of Elefant's version numbering system, see here.
The following hosting companies officially support Elefant as a one-click install in their packages: