A Google algorithm update is a change to the rules that determine how websites are ranked in search results. While small updates happen almost daily, larger updates roll out several times per year. They don’t target individual sites, but can still reshape visibility across whole industries.
Among those, Google Core Updates are the most significant. They are broad changes to Google’s search algorithms and systems, designed to improve the overall quality and relevance of search results. Other updates focus on spam prevention, helpful content, or reviews, each designed to highlight trustworthy, relevant results.
For SEO, this means that rankings never stay still. They move as Google adjusts its approach to reward sites that give users the best experience and most reliable information.
Why do Google algorithm updates happen?
Google algorithm updates happen to improve the quality of search results. They are designed to highlight the most relevant, helpful, and trustworthy pages while reducing the visibility of low-value or manipulative content.
How often does Google update its search algorithm?
Google makes small adjustments to its algorithm almost every day. Larger core updates roll out several times a year, often every few months, and can cause more noticeable shifts in search rankings.
Why did my website rankings drop after a Google algorithm update?
Rankings may drop after a Google algorithm update if your site no longer matches Google’s quality signals. This does not mean your site was directly penalized, but that other pages may now be judged as more relevant, authoritative, or user-friendly. Partnering with an experienced SEO agency like Coalition Technologies is beneficial after a Google algorithm update because it removes the guesswork and helps your site adapt quickly to Google’s changes.
How can I prepare for the next Google algorithm update?
You can prepare by focusing on long-term SEO best practices. Publish high-quality content, improve site speed and usability, earn trustworthy links, and avoid spam tactics. Sites that prioritize user experience and reliable information are more resilient during Google algorithm updates.
Table of Contents
- 1 Why do Google algorithm updates happen?
- 2 How often does Google update its search algorithm?
- 3 Why did my website rankings drop after a Google algorithm update?
- 4 How can I prepare for the next Google algorithm update?
- 5 All Updates
- 5.1 MAY 2026 GOOGLE CORE UPDATE
- 5.2 MARCH 2026 GOOGLE CORE UPDATE
- 5.3 FEBRUARY 2026 GOOGLE DISCOVER UPDATE
- 5.4 DECEMBER 2025 CORE UPDATE
- 5.5 AUGUST 2025 SPAM UPDATE
- 5.6 JUNE 2025 CORE UPDATE
- 5.7 MARCH 2025 CORE UPDATE
- 5.8 MARCH 2024 CORE UPDATE
- 5.9 NOVEMBER 2023 CORE UPDATE
- 5.10 SEPTEMBER 2023 CORE UPDATE
- 5.11 AUGUST 2023 CORE UPDATE
- 5.12 JULY 2023 HELPFUL CONTENT UPDATE
- 5.13 APRIL 2023 HELPFUL CONTENT UPDATE
- 5.14 SEPTEMBER 2022 CORE UPDATE
- 5.15 AUGUST 2022 CORE UPDATE
- 5.16 JUNE 2021 CORE UPDATE
- 6 Related Resources
All Updates
May 2026
MAY 2026 GOOGLE CORE UPDATE
The May 2026 core update is the second confirmed core update of 2026, rolling out globally on May 21 with Google framing it as a regular recalibration aimed at surfacing more relevant, satisfying content. What makes it notable is the timing: it arrived only about six weeks after the March 2026 core update completed, a faster cadence than the three-to-four-month spacing that has been typical in recent years, and it launched in the same week as Google I/O 2026, where Google unveiled a wave of AI-driven changes to Search.
Read:
The May 2026 Google Core Algorithm Update: The Important Details
March 2026
MARCH 2026 GOOGLE CORE UPDATE
The March 2026 Google core update, overlapping with a recent spam update, generated amplified volatility by refining content evaluation and placing greater weight on comparative value, intent alignment, and expertise across competing pages. This timing complicates attribution, but early data indicates moderate fluctuations across industries, with sites demonstrating sustained, long-term investment in content quality and technical SEO maintaining greater stability.
Read:
The March 2026 Google Core Algorithm Update: What You Need to Know
February 2026
FEBRUARY 2026 GOOGLE DISCOVER UPDATE
Released on February 5 2026, this is a core update that only affects Google Discover, not traditional search results. The update is designed to make Discover more relevant and less spammy by showing more country-local content, reducing clickbait, and prioritizing in-depth, original, timely reporting from publishers it recognizes as topic experts. As a result, non-US sites targeting the US may lose US Discover traffic, but may gain visibility over time in their own local markets as Discover favors regionally relevant content.
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December 2025
DECEMBER 2025 CORE UPDATE
Rolled out beginning December 12 2025 and is expected to take up to three weeks to complete. This update focuses on surfacing more relevant and satisfying content across all site types and continues Google’s broader refinements to overall content quality and helpfulness.
Read:
The December 2025 Google Core Algorithm Update: What You Need to Know
August 2025
AUGUST 2025 SPAM UPDATE
Ongoing. Rollout began on August 26 2025 and is expected to take several weeks to complete.
June 2025
JUNE 2025 CORE UPDATE
Rolled out June 30 to July 17 2025 and focused on surfacing more relevant and satisfying content with strong impacts on YMYL sites AI content and smaller high quality publishers.
Read:
The June 2025 Google Core Algorithm Update: What You Need to Know
March 2025
MARCH 2025 CORE UPDATE
Rolled out March 13 to March 27 2025 as a broad recalibration of ranking signals across many verticals including a reversal of some earlier forum gains.
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March 2024
MARCH 2024 CORE UPDATE
Rolled out March 5 to April 19 2024 and integrated the Helpful Content system into the core while expanding anti spam systems to reduce unoriginal content.
Read:
Google March 2024 Core Update: Bad News for Low-Quality Content
November 2023
NOVEMBER 2023 CORE UPDATE
Rolled out November 2 to November 28 2023 and continued the push toward helpful and relevant content marking the second core update in the same quarter.
September 2023
SEPTEMBER 2023 CORE UPDATE
Rolled out September 14 to September 28 2023 and broadly reshuffled rankings with a focus on rewarding original and helpful content.
Read:
August 2023
AUGUST 2023 CORE UPDATE
Rolled out August 22 to September 7 2023 and rewarded user-generated content and websites that demonstrated firsthand experience.
July 2023
JULY 2023 HELPFUL CONTENT UPDATE
First global rollout of the Helpful Content system in July 2023. It improved how Google identified helpful content across languages and gave a stronger boost to people-first material.
Read:
Google Helpful Content Update 2023 and Its Impact on Your SEO
April 2023
APRIL 2023 HELPFUL CONTENT UPDATE
Rolled out April 2023 and refined signals to better evaluate content experience and originality while expanding coverage to more niches.
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September 2022
SEPTEMBER 2022 CORE UPDATE
Rolled out September 12 to September 26 2022 and emphasized expertise authoritativeness and trustworthiness while overlapping with other major changes in product reviews and helpful content.
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August 2022
AUGUST 2022 CORE UPDATE
Rolled out August 25 to September 12 2022 and targeted overall content quality with noticeable volatility across search verticals.
Read:
June 2021
JUNE 2021 CORE UPDATE
Rolled out June 2 to June 12 2021 and adjusted broad ranking factors to improve relevance and authority in search results.
Read:
Google’s 2021 Algorithm Updates: What You Need to Know and Do
Work with Coalition
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