pantheon.upstream.yml

# IMPORTANT NOTE:
# Do not edit this file unless you are doing so in your custom upstream repository.
# Override the defaults specified here in a site-specific `pantheon.yml` file.
# For more information see: https://pantheon.io/docs/pantheon-upstream-yml
api_version: 1
php_version: 7.2

# See https://pantheon.io/docs/pantheon-yml/#enforce-https--hsts for valid values.
enforce_https: transitional