1) To update Zoom please go to this link: Zoom Update
2) Next to the "Download" button is the latest version of Zoom.
3) Click on the "Download" button
4) Click on the install file and it will update your Zoom.
How to tell what version of Zoom you are in
There are two methods on how to determine the version of Zoom you are in. Method 1 is located in your sign-in screen of your Zoom app, and method 2 would be located in your settings.
Method 1
1) Launch your Zoom App
2) Below your "Sign In" button you should see the Version of Zoom you are on.
Method 2
1) Go to the top right corner and click on your icon.
2) Then click on the "Settings" Button.
3) Then click on "Statistics" located on the left.
For additional guide on Zoom Updating, visit this link: Update Zoom