What Happened and What You Should Know Right Now
Google released the May [year] Core Update yesterday, May 21, beginning its rollout at 8:40 AM Pacific time. The update could take up to two weeks to fully complete, meaning rankings will continue shifting until around June 4. This is the second broad core update of [year] , following the March update that moved nearly 80% of top-three positions. If your rankings or traffic numbers have been swinging wildly since yesterday — you are not imagining it. The update is live and active right now.
What makes this one different from previous updates is the engine underneath it. The May [year] Core Update is powered by Gemini-based quality models — the same AI infrastructure Google unveiled at I/O this week. Google is now running its core ranking systems through advanced AI rather than the traditional signal-weighting models that have defined search for the past decade. The emphasis according to early SEO community analysis is consistent with the March update direction: surfacing original, helpful, people-first content and penalizing automated, ad-bloated content. But with Gemini’s multimodal understanding built into the quality evaluation, the signals Google can read are significantly more sophisticated than before.
What to Do — and What Not to Do — Right Now
The most important thing to not do is make sudden content changes based on early ranking movement. Google’s own guidance is to wait until the rollout completes before drawing conclusions. Rankings during a two-week rollout are not stable — a drop recorded on May 22 may not be the final outcome. The earliest you should be reviewing Search Console data and making strategic decisions is around June 4, after the update has fully rolled out.
What you should be doing in the meantime is auditing your highest-traffic pages for the signals this update rewards: genuine expert authorship, original data, first-hand experience with the topic, and editorial transparency. Local service businesses — dental practices, law firms, home care agencies — should ensure their Google Business Profile is fully complete and their service pages are locally specific and genuinely helpful. If your site was already hit by the March [year] update and has not yet recovered, the May update is the next meaningful recovery opportunity — but only if the underlying quality improvements were made between April and now. The next core update will not help a site that made no substantive changes since the last one.
Quick Links:
