The announcement for Chrome 53.0.2785.113 highlights five security issues that are addressed in the new version. It points to this page for details, but currently nothing is listed there. According to Google, “Access to bug details and links may be kept restricted until a majority of users are updated with a fix.”

The full change log lists several dozen changes, most of which are minor bug fixes.

For most users, Chrome will update itself. To make sure you’re running the most recent version, click the menu button (at the top right; looks like three vertical dots), and select Help > About. If Chrome hasn’t already updated itself, this should trigger the update.