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Renew a TLS certificate for GOV.UK

This document covers how to renew wildcard TLS certificates for *, * and * It is a task performed by Reliability Engineering.

Credentials for the Fastly dashboard and Zendesk support sites are in the 2nd line password store.

  1. Generate a Certificate Signing Request (CSR) for a renewal.
  2. Log into Gandi using the credentials in the infra password store.
  3. Go to the account dashboard and find the list of TLS certificates on the account.
  4. Find the certificate you wish to renew and click Renew. You need to request a wildcard certificate (for example, *
  5. Go through the steps on the renewal form until you reach a page requesting a Certificate Signing Request.
  6. Upload the CSR to Gandi by pasting the contents of the .csr file into the text box.
  7. Next, choose DNS validation to validate it and follow the instructions to add the relevant DNS records.
  8. Pay for it - we don't have a stored payment method, so find the person with the GDS credit card. Or raise a request for temporary credit card details from PMO by sending an email to
  9. Once the certificate has been renewed, paste the contents of the resulting .crt file into Puppet hieradata for the relevant environment in the govuk-secrets repository.
  10. Deploy Puppet to update the certificate in the relevant environment.
  11. Import the certificate to AWS ACM. Login to the AWS console in the appropriate environment and follow the instructions here. The chain cert is the second certificate under "wildcard_publishing_certificate" in govuk-secrets.
  12. For staging and integration only: Go to the Fastly interface and then to Configure -> HTTPS and network. Go to TLS certificates and upload your new cert. (You do not need to do this for production because we use a different certificate there)
  13. For staging and integration only: In TLS domains click on more details and then select your new certificate under CERTIFICATE BEING USED.
This page was last reviewed on 24 July 2020. It needs to be reviewed again on 24 January 2021 by the page owner #re-govuk .
This page was set to be reviewed before 24 January 2021 by the page owner #re-govuk. This might mean the content is out of date.