Version 91 of Google Chrome, specifically 91.0.4472.77, has been released with several useful new features and 32 security holes fixed. Update as soon as possible.

The new version was released late yesterday (May 25). So far, the update has not been reflected in Chrome's sibling browsers Brave, Edge, Opera, and Vivaldi, but at least some of them are expected to receive the update today.

To update Chrome on Windows or Mac, it is usually sufficient to close and restart the browser. Just to be safe, click on the three vertical dots in the upper right corner of the browser window, scroll down to highlight "Help," and click "About Google Chrome" from the menu that appears.

A new tab will open, indicating that you have the latest build of Chrome or are downloading a newer version.

Linux users may need to wait until their distribution delivers the Chrome update along with the regular software updates.

The Android, iOS, and Chrome OS versions of Chrome get separate patch sets and are updated on their own cycles. Chrome 91 for Android was released yesterday and should appear on Google Play soon. iOS Chrome 91 is in beta and can be downloaded from the App Store for users who have enabled beta releases.

At least eight of the flaws fixed in this version of Chrome have been rated as "high" in severity on Chrome's official blog. This means that these flaws could be exploited by malicious websites or other Internet-based attacks.

None of the flaws are flagged as "zero-day" problems, meaning that attackers exploited the flaw before Google fixed it. This means that Google is free from the recent chain of zero-day problems that led to Google providing four patches to Chrome in a two-week period in April.

Most of the other changes to Chrome are subtle and will not be noticed by most users. They include a new gravity sensor for laptops with the right hardware and the ability to copy and paste files directly from the operating system's file manager into Gmail messages.

A summary of the latest Chrome desktop update follows.