Google rolls out significant, broad changes to its ranking systems several times a year. These are called core updates, and each one can reshape the search results overnight — lifting some sites, dropping others, and leaving business owners scrambling to understand why. This page is a complete, plain-English history of every major Google core update, kept up to date as new ones roll out. The most recent confirmed broad core update is the May 2026 core update.
At Rank Matrix, a UK SEO agency, we track every core update closely so our clients stay resilient through each one. Below you’ll find what a core update actually is, the foundational algorithm changes that shaped modern SEO, and a year-by-year timeline of every broad core update — with dates and details — followed by exactly what to do if one has hit your rankings.
What is a Google core update?
A core update is a broad, global change to Google’s main ranking systems — not a penalty aimed at individual sites, but a re-assessment of how Google weighs quality, relevance and trust across the entire web. If your rankings drop during a core update, it usually doesn’t mean you broke a rule; it means Google is now rewarding other pages it considers more helpful. Recovery comes from genuinely improving your content and site, not from chasing a quick fix. This is closely tied to Google’s wider algorithm updates and the trust signals behind them.
Core updates vs spam and helpful content updates
- Core updates — broad changes to how Google assesses overall quality and relevance.
- Spam updates — target sites breaking Google’s spam policies (cloaking, link schemes, scaled abuse).
- Helpful content / reviews systems — reward people-first, genuinely useful content. Since March 2024, the helpful content system has been folded directly into the core algorithm.
The foundational updates (before “core updates”)
Before Google adopted the modern “broad core update” naming, a series of landmark updates built the foundations of how search works today. Understanding them explains why quality, links and intent matter so much now.
- Panda (24 February 2011): Targeted thin, low-quality and “content farm” pages, rewarding original, in-depth content. Later folded into the core algorithm.
- Penguin (24 April 2012): Cracked down on manipulative link schemes and over-optimised anchor text. Became part of the real-time core algorithm in 2016.
- Hummingbird (August 2013): A near-complete rewrite of the core algorithm to understand the meaning and intent behind a query — the birth of semantic search.
- Pigeon (24 July 2014): Overhauled local search, tying it more closely to traditional ranking signals and improving local relevance.
- Mobile-Friendly “Mobilegeddon” (21 April 2015): Boosted mobile-friendly pages on mobile — a major step towards mobile-first indexing.
- RankBrain (26 October 2015): Google’s first machine-learning ranking system, helping interpret ambiguous and never-before-seen queries.
- Possum (1 September 2016): Refined the local “map pack”, diversifying results by the searcher’s location and a business’s address.
- Fred (8 March 2017): An (unofficially named) update targeting low-value, ad-heavy content built for revenue rather than users.
Every Google broad core update (2018–today)
From 2018 onwards, Google began publicly confirming its broad core updates and giving them date-based names. Here is the full timeline, one by one.
2018
- March 2018 Core Update (“Brackets”) — early March 2018: The first broad core update Google publicly confirmed in the modern style, rewarding quality content that had previously been under-rewarded.
- April 2018 Core Update — mid April 2018: A second broad core update just weeks later, reinforcing relevance and quality assessments.
- August 2018 Core Update (“Medic”) — 1 August 2018: A huge, widely felt update that heavily affected health, medical and other YMYL (“Your Money or Your Life”) sites, putting E-E-A-T firmly on the map.
2019
- March 2019 Core Update (“Florida 2”) — 12 March 2019: A broad, global update affecting all regions and languages.
- June 2019 Core Update — 3 June 2019: The first core update Google pre-announced a day in advance, setting the pattern for transparency since.
- September 2019 Core Update — 24 September 2019: A broad update with notable movement across YMYL niches.
2020
- January 2020 Core Update — 13 January 2020: Significant impact on YMYL categories such as health and finance.
- May 2020 Core Update — 4 May 2020: One of the largest of its era, with big swings across many sectors during the pandemic.
- December 2020 Core Update — 3 December 2020: A broad, volatile update that closed out the year with wide-ranging shifts.
2021
- June 2021 Core Update — 2 June 2021: Rolled out as “part one” of a two-part update because some changes weren’t ready.
- July 2021 Core Update — 1 July 2021: “Part two”, completing the changes begun in June.
- November 2021 Core Update — 17 November 2021: A broad update arriving just before the holiday shopping season.
2022
- May 2022 Core Update — 25 May 2022: A broad update with strong volatility, particularly across news and e-commerce.
- September 2022 Core Update — 12 September 2022: Rolled out around the same period as Google’s helpful content changes.
2023
- March 2023 Core Update — 15 March 2023: A wide-ranging update that completed in around two weeks.
- August 2023 Core Update — 22 August 2023: A broad update affecting many niches globally.
- October 2023 Core Update — 5 October 2023: Overlapped with a spam update, making for an especially volatile rollout.
- November 2023 Core Update — 2 November 2023: An unusually quick follow-up to October, refining the same systems.
2024
- March 2024 Core Update — 5 March 2024: A landmark, complex update (rolling out over roughly 45 days to 19 April) that integrated the helpful content system into the core algorithm and aimed to sharply reduce unhelpful, mass-produced content. Launched alongside new spam policies.
- August 2024 Core Update — 15 August 2024: Aimed to better reward genuinely helpful content and sites unfairly hit by earlier updates.
- November 2024 Core Update — 11 November 2024: A broad update that completed in early December.
- December 2024 Core Update — 12 December 2024: An unusually close follow-up to November, finishing within about a week.
2025
- March 2025 Core Update — 13 March 2025: A broad update rolling out over roughly two weeks.
- June 2025 Core Update — 30 June 2025: A broad update (around a 17-day rollout) with notable YMYL volatility and growing interplay with AI Overviews.
- December 2025 Core Update — 11 December 2025: The year’s final broad update, completing in late December.
2026 (to date)
- February 2026 Discover Update — 5 February 2026: The first core-style update Google explicitly scoped to Google Discover, rolling out over around 22 days.
- March 2026 Core Update — 27 March 2026: A broad core update completing in mid-April after a roughly 12-day rollout (closely following a March 2026 spam update).
- May 2026 Core Update — 21 May 2026: The most recent broad core update, completing in early June 2026 after about a 12-day rollout. A June 2026 spam update followed shortly after.
How to recover from a Google core update
If a core update has knocked your rankings, resist the urge to make panicked changes. Google’s own guidance is consistent: there is no instant fix, and recovery comes from genuinely improving your site over time. Here’s where to focus.
- Audit honestly: identify which pages and queries lost visibility and look for quality gaps. A professional SEO audit pinpoints exactly what changed and why.
- Improve content quality: make pages more helpful, accurate, original and people-first — strong content marketing is central to lasting recovery.
- Strengthen E-E-A-T: show real expertise, authorship, credentials and trust signals, especially on YMYL topics.
- Fix the foundations: a fast, crawlable, well-structured site supported by sound technical SEO helps Google reassess your pages favourably.
- Be patient: recoveries often appear at the next core update, once Google re-evaluates your improved site.
Frequently asked questions
How often does Google release core updates?
Typically three to four broad core updates a year, though the cadence varies. Google confirms each one on its Search Status Dashboard and usually announces the start and end of every rollout.
How long does a core update take to roll out?
Most take one to three weeks, but some have run far longer — the March 2024 core update took around 45 days. Rankings can fluctuate throughout the rollout, so it’s wise to wait until it completes before judging the impact.
Did I get penalised by a core update?
No — core updates aren’t penalties. They’re a broad re-assessment of quality and relevance across the web. A drop signals an opportunity to improve, not a manual action against your site.
Can you help my site recover?
Yes. We diagnose exactly what a core update changed for your site and build a clear, prioritised plan to win back visibility and grow beyond it.
Stay resilient through every core update
Core updates will keep coming, but they reward the same thing every time: genuinely helpful, trustworthy, well-built websites. Get those fundamentals right and each update becomes an opportunity rather than a threat.
Not sure how the latest core update affected your rankings? Get a free SEO audit from Rank Matrix and we’ll show you exactly where you stand and how to recover and grow. Explore our full range of SEO services or talk to our team about building search visibility that survives every Google update.