Lets Encrypt Updates

1. Aug 11, 2026
   Going Back to Our Roots: A Little Piece of Let's Encrypt History

   18 days ago
2. Jun 3, 2026
   A Post-Quantum Future for Let's Encrypt

   3 months ago
3. Apr 10, 2026
   The difficulty of making sure your website is broken

   5 months ago
4. Mar 17, 2026
   Simplifying Certificate Renewals for Millions of Domains with ACME Renewal Information (ARI)

   5 months ago
5. Mar 11, 2026
   Six-Day and IP Address Certificates Available in Certbot

   6 months ago
6. Feb 24, 2026
   Shorter Certificate Lifetimes and Rate Limits

   6 months ago
7. Feb 18, 2026
   DNS-PERSIST-01: A New Model for DNS-based Challenge Validation

   6 months ago
8. Feb 5, 2026
   On the Importance of "Hello" and "Thanks"

   7 months ago
9. Jan 15, 2026
   6-day and IP Address Certificates are Generally AvailableImportant

   8 months ago
10. Dec 29, 2025
    A Note from our Executive Director

    8 months ago
11. Dec 9, 2025
    10 Years of Let's Encrypt CertificatesImportant

    9 months ago
12. Dec 2, 2025
    Decreasing Certificate Lifetimes to 45 Days

    9 months ago
13. Nov 24, 2025
    New "Generation Y" Hierarchy of Root and Intermediate Certificates

    9 months ago
14. Oct 7, 2025
    Ten Years of Community Support

    11 months ago
15. Sep 16, 2025
    ACME Renewal Information (ARI) Published as RFC 9773

    12 months ago
16. Sep 11, 2025
    Native ACME Support Comes to NGINX

    12 months ago
17. Aug 14, 2025
    End of Life Plan for RFC 6962 Certificate Transparency LogsImportant

    about 1 year ago
18. Aug 6, 2025
    OCSP Service Has Reached End of LifeImportant

    about 1 year ago
19. Jul 1, 2025
    We've Issued Our First IP Address CertificateImportant

    about 1 year ago
20. Jun 26, 2025
    Expiration Notification Service Has Ended

    about 1 year ago
21. Jun 11, 2025
    Reflections on a Year of Sunlight

    about 1 year ago
22. Jun 4, 2025
    How We Reduced the Impact of Zombie Clients

    about 1 year ago
23. May 21, 2025
    Sustaining a More Secure Internet: The Power of Recurring Donations

    over 1 year ago
24. May 14, 2025
    Ending TLS Client Authentication Certificate Support in 2026

    over 1 year ago
25. Apr 30, 2025
    How Pebble Supports ACME Client Developers

    over 1 year ago

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