Restart After Effects after updating a tool so the new version loads.
Updates
Keep every tool on the latest version.
The Updates tab lists your installed tools with their current state: Up to date, or Update available with an Update to <version> button. One click installs the new version.
The app keeps itself up to date too. When a new version of the app is ready, it will let you know. All you’ll need to do is restart the app.