Yoast SEO was updated to version 4.0, from version 3.9. Changelog:

• License manager: Add a get_extension_url method to Yoast_Product to retrieve the URL where people can extend/upgrade their license.
• License manager: Add a set_extension_url method to Yoast_Product to set the URL where people can extend/upgrade their license.
• Updates the credits page.
• Improves plugin naming in translations.
• Improves translations by making texts more consistent.
• Displays the translations in the language chosen by the user in stead of using only the site language.
• Improves the styling of the banners.
• Adds passive voice for German.
• Adds more transition words for French.
• Improves feedback strings for the meta description length assessment.
• Improves matching of the keyword in the first paragraph.
• Improves the snippet preview to match the styling of googles snippet.
• Fixes a compatibility bug with the onboarding wizard and Polylang, and possibly more plugins that prevented the configuration wizard from working properly.
• Fixes a bug where post format archives showed up in sitemap when disabled.
• Fixes a bug where an old update notice would not be removed.
• Fixes a bug where keywords with periods where not highlighted in the snippet.
• Fixes a bug where the title of the metabox wasn’t displayed correctly.