Sign in to your WordPress: (nameofsite.com/wp-admin)
Dashboard: Left side menu click on ‘Updates‘
On ‘WordPress Updates‘ Page scroll down to ‘Plugins‘
Only plugins that need to be updated will show up under this section. ‘Select all’ or if there’s one check, the checkbox beside the single plugin and then click on the button that says ‘Update Plugins’
Wait a few seconds and Voila! Your site is updated.