To update chkit you need to download binary for MacOs, Ubuntu x32, Ubuntu x64, Windows x32 and Windows x64. Extract the file to the same directory as the previous version of chkit.

For Ubuntu and MacOs:

$ tar -xvf your_archive.tar -C /path/to/destination/dir/ 

For Windows:

tar xvf your_archive.tar 

Now check the version of chkit:

$ chkit version CH Client Version: 2.0.5 Built: 28 Jul 17 11:02 MSK OS: darwin Platform: amd64 Git commit: c1283f0