diff --git a/terragrunt/modules/ci-runners/codebuild.tf b/terragrunt/modules/ci-runners/codebuild.tf
index 341749669..e1c71db9d 100644
--- a/terragrunt/modules/ci-runners/codebuild.tf
+++ b/terragrunt/modules/ci-runners/codebuild.tf
@@ -1,6 +1,10 @@
 // Manual steps required after provisioning a project:
 // - Connect the GitHub App of the organization, indicating the repositories.
 // - Set webhooks with event type `WORKFLOW_JOB_QUEUED` in the filter group.
+//
+// These manual steps are required because the terraform provider is missing
+// support for GitHub Actions runners.
+// See https://github.com/hashicorp/terraform-provider-aws/issues/39011
 
 resource "aws_codebuild_project" "ubuntu_small" {
   name         = "ubuntu-small"