diff --git a/roles/prometheus/defaults/main.yml b/roles/prometheus/defaults/main.yml
index 8e279a4dc50c6cfc1df16de6ff4d300af5b28d00..c43fe049faa0c3051718e15d575ec55ce4e31c6f 100644
--- a/roles/prometheus/defaults/main.yml
+++ b/roles/prometheus/defaults/main.yml
@@ -78,6 +78,7 @@ blackbox_targets:
     - https://reproducible.archlinux.org
     - https://rfc.archlinux.page
     - https://security.archlinux.org
+    - https://signstar.archlinux.archlinux.page/nethsm/
     - https://sources.archlinux.org
     - https://static.conf.archlinux.org/README.md
     - https://sydney.mirror.pkgbuild.com
diff --git a/tf-stage1/archlinux.tf b/tf-stage1/archlinux.tf
index 5628ce27453f84c89e728aac5c6a0b81604320b8..518c748af0800c9e944f7dff3be0fac65fd05d36 100644
--- a/tf-stage1/archlinux.tf
+++ b/tf-stage1/archlinux.tf
@@ -182,6 +182,7 @@ locals {
     "monthly-reports" = "a2d60657e960b480cdb229df7cc7edf3"
     "pacman"          = "3c5fb9413c1d66dac516a08277575662"
     "alpm"            = "363d06e0957fbfd22403e4dd992afc48"
+    "signstar"        = "5c348888c16d81166379017879a29fe3"
   }
 
   # This creates archlinux.org TXT DNS entries