Windows
There are several ways to upgrade LibreOffice, including the Online Update option available in the LibreOffice application. Any method should be acceptable, but a method has been suggested here as the most reliable way of creating a clean installation at the targeted version for upgrade. This is especially important when using LibreOffice in a carefully controlled environment, e.g. on a production system.
Uninstall the current version of LibreOffice using Windows Add or remove programs
Install the new version of LibreOffice using the standard installation instructions: https://phixflow.atlassian.net/wiki/spaces/HELPTRUNKR/pages/8670183484/Install+LibreOffice#Windows
Remember to check whether configuration of the integration of PhixFlow with LibreOffice needs to be updated: Configuring PDF Conversion
Linux
If installed from the repository as recommended (see https://phixflow.atlassian.net/wiki/spaces/HELPTRUNKR/pages/8670183484/Install+LibreOffice#Linux), LibreOffice should be upgraded as part of a dist-upgrade process, not individually:
sudo apt update sudo apt dist-upgrade