diff --git a/route53_static.tf b/route53_static.tf
index 51d0c3d..b189c22 100644
--- a/route53_static.tf
+++ b/route53_static.tf
@@ -21,12 +21,11 @@ resource "aws_route53_record" "root_CAA" {
 # Generation of the domain identity token and DKIM keys in SES.
 # ------------------------------------------------------------------------------
 
-# We should consider upgrading to aws_sesv2_email_identity, although
-# it would be a destructive upgrade:
+# TODO: Consider upgrading to aws_sesv2_email_identity, although it
+# would likely be a destructive upgrade:
 # https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/sesv2_email_identity
 #
-# See also
-# https://github.com/trussworks/terraform-aws-ses-domain/blob/main/main.tf
+# See also issue #109.
 resource "aws_ses_domain_identity" "cyhy_dhs_gov_identity" {
   provider = aws.route53resourcechange