GoogleCore UpdateConfirmedHigh impact
May 2026 core update
Second core update of 2026, completing in twelve days and reported as causing significant ranking volatility.
What changed
Google ran the May 2026 core update from 21 May to 2 June. Third-party tracking recorded substantial movement during the rollout, particularly for publishers and informational content. Google announced it with its standard guidance and made no accompanying policy changes.
Timing
Rollout began 21 May 2026. Google declared it complete on 2 June 2026, 12 days later. Rankings typically remain unstable for the whole rollout window, so measurements taken inside it are not a reliable read on the outcome.