lando update 
Updates Lando.
This will update all the constituent components of Lando, including @lando/core, @lando/cli, and any Lando plugins you may have installed (ex: @lando/php).
Note that if you have installed a plugin via source or a development version of a component you will not be able to update until you remove those components and re-install them. lando plugin-add is good for this purpose.
Also note that you can set the release channel to edge to get more bleeding edge updates.
Usage 
sh
lando update [--yes]Options 
sh
--channel      Sets the update channel                                                              [array] [choices: "edge", "none", "stable"]
--clear        Clears the lando tasks cache                                                                                           [boolean]
--debug        Shows debug output                                                                                                     [boolean]
--help         Shows lando or delegated command help if applicable                                                                    [boolean]
--verbose, -v  Runs with extra verbosity                                                                                                [count]
--yes, -y      Runs non-interactively with all accepted default answers                                              [boolean] [default: false]