Freshness and content updates
Update pages when facts change, show a visible “Last updated” date that matches dateModified in structured data, keep sitemap lastmod accurate, and notify Bing with IndexNow. Changing a date without changing content doesn't make a page fresh.
Why freshness matters
Answer engines retrieve live pages when they ground an answer,[1][2] so outdated facts get repeated or skipped. Bing advises keeping content updated and providing accurate sitemap lastmod values.[3] Vendor-documented
What to do
| Action | Source |
|---|---|
Show a prominent date labeled “Published” or “Last updated”; match it in datePublished and dateModified | Google byline dates[4] |
Keep <lastmod> accurate; Google uses it only if it is “consistently and verifiably” accurate | Google sitemaps[5] |
| Ping IndexNow when URLs are added, updated or deleted | Bing, IndexNow[3][6] |
| Review statistics and screenshots on a schedule | Practice Practitioner practice |
What not to do
Google’s helpful content guidance asks: “Are you changing the date of pages to make them seem fresh when the content has not substantially changed?”[7] Don’t. Also avoid future dates and multiple conflicting dates on a page.[4]
A review cadence
- Monthly: pages about fast-moving topics (engine features, prices, policies).
- Quarterly: top traffic and top-cited pages (find them in AI visibility reports).
- Yearly: evergreen explainers.
This wiki shows “Last reviewed September 2026” on every page and uses the same date in its sitemap.
How Google reads visible and structured dates
Google's guidance on byline dates says it uses several signals and does not depend on a single factor. Its recommendations:[4]
- Show a clear, visible date and, optionally, a time with a time zone.
- Add
datePublishedanddateModifiedin structured data, and keep them consistent with the dates visible on the page. - Do not use future dates, and do not use the date of an event the page describes as the publication date.
- Minimize other dates on the page so the publication date is easy to identify.
Google does not guarantee that it will show a date in results.[4] Vendor-documented On this site each article shows a visible published and updated date, and the page markup repeats both values in datePublished and dateModified.
What counts as a significant update for lastmod
Google uses the sitemap lastmod value only if it is consistently and verifiably accurate, and says it should reflect the last significant update to the page. A change to the main content, the structured data or the links counts. A copyright-date change does not. Google ignores priority and changefreq values, accepts sitemaps up to 50 MB or 50,000 URLs, and treats submission as a hint rather than a command.[5] Vendor-documented
Freshness tricks Google calls warning signs
Google's content guidance lists two freshness warning signs: changing the date of a page to make it appear fresh without substantially updating it, and adding or removing large amounts of content only to seem fresh.[7] A date change should follow a real change in what the page says. Vendor-documented
Update checklist
- Change the substance: a corrected fact, a new source, a replaced screenshot or a new section.
- Update the visible "Updated" date and
dateModifiedtogether, to the same day. - Update sitemap
lastmodfor that URL only, not for the whole site. - Record the change in a public revision history so readers can see what moved. This site uses its revision history.
Practitioner practice
Frequently asked questions
Does updating the date improve rankings?
No. Google warns against changing dates without substantial changes.
What is IndexNow?
An open protocol that lets sites notify participating search engines, including Bing, when URLs change.
Should the sitemap lastmod match the date shown on the page?
They should agree. Google uses lastmod only when it is consistently and verifiably accurate, and recommends that visible dates and structured dates match.
Does changing the date make a page rank as fresh?
Google lists changing a date without a substantial update as a warning sign, not a tactic.
See also
References
Pages accessed September 28, 2026 unless a date is given. Sources added on October 31, 2026 were accessed that day. See all sources and our editorial policy.
- ^ "Optimizing your website for generative AI features on Google Search". Google Search Central. Added May 15, 2026; last updated July 10, 2026.
- ^ "Grounding with Google Search (Gemini API)". Google AI for Developers.
- ^ "Bing Webmaster Guidelines". Microsoft Bing Webmaster Tools.
- ^ "Influencing your byline dates in Google Search". Google Search Central.
- ^ "Build and submit a sitemap". Google Search Central.
- ^ "IndexNow protocol". IndexNow.org.
- ^ "Creating helpful, reliable, people-first content". Google Search Central.