To update the list of the available addon modules in your instance, you need to perform the following steps:

1. Open the Apps menu:

2. Click on Update Apps List:

3. In the dialog, click on the Update button.
4. At the end of the update, you can click on the Apps entry to see the updated list of the available addon modules. You will need to remove the default filter on Apps in the search box to see all of them.