If Curator has been installed via
pip, the preferred way to upgrade is:
pip install -U elasticsearch-curator
If you need to manually upgrade, follow the installation instructions for installing from source to obtain the most recent versions of both elasticsearch-py and Curator.
You should then be able to run:
pip install -U elasticsearch-py.tar.gz
pip install -U elasticsearch-curator.tar.gz
If Curator has been installed via package repository, then use the standard upgrade method for your repository.