Most of the time, AZLabels will automatically update every 24-48 hours, but if you need to update your extension manually, here are the instructions to do so.

In a new tab, where you normally type the URL, enter: "chrome://extensions". Then, enable Developer Mode in the top right corner. Finally, click the Update button at the top-left:

Sometimes extensions updates can take some time to be approved by the Google team. You can see the currently available version at:

https://chrome.google.com/webstore/detail/azlabels-thermal-labels-f/inmneomoclbfckggkehdaimnamkekpnc

Scroll down to the Additional Information section to see the available version.