Changelog archive

Special Service Guide Update for August 31, 2020

Starting September 29th, 2020, TLS certification authority Let’s Encrypt will begin using their own root certificate by default, without a cross-sign. If you are a customer using Fastly-managed certificates from Let’s Encrypt, this change will not require action on your part and will have no impact on your traffic.

For customers who require support for Android devices older than Android 7.1 and who provide their own Let’s Encrypt certificates with our Platform TLS, Legacy Customer-Provided TLS Certificate Hosting Service, or Fastly TLS products, this change will require action on your part to avoid any impact on your traffic.

For more information on the update from Let’s Encrypt and actions to be taken, refer to their posted details on the subject:

For general questions about this announcement, contact our customer support team at

Our documentation archive contains PDF snapshots of site content as of the above date. Previous updates can be found in the archive as well.