diff --git a/README.md b/README.md
index 582c1444..f16983c5 100644
--- a/README.md
+++ b/README.md
@@ -194,7 +194,7 @@ famstack comes with a lightweight bot runtime. The bots are tiny helpers that au
 | docs     | working | Paperless-ngx          | Document archive with OCR                                |
 | ai       | working | TTS, Whisper, oMLX     | Turns your Mac into an AI Machine                        |
 | memory   | working | Forgejo, Quartz        | Family wiki, diary and lists, kept as plain files        |
-| backup   | working | rsync                  | Append-only backups to an attached disk                  |
+| backup   | beta    | rsync                  | Append-only backups to an attached disk                  |
 | agent    | beta    | nanobot                | Stacky, the family agent in your chat                    |
 | chatai   | beta    | Open WebUI             | ChatGPT-like chat interface                              |
 | code     | beta    | Forgejo                | Private Git server                                       |
diff --git a/stacklets/backup/stacklet.toml b/stacklets/backup/stacklet.toml
index 570bc390..cdadf687 100644
--- a/stacklets/backup/stacklet.toml
+++ b/stacklets/backup/stacklet.toml
@@ -28,6 +28,8 @@ description = "Append-only backup of stacklet data to attached disks"
 version     = "0.1.0"
 category    = "infrastructure"
 type        = "host"
+# Beta: its configuration can still change between releases.
+stage       = "beta"
 
 # Backup runs once per night via a host-installed cron entry. The cron
 # command invokes ``stack backup sync`` directly. macOS sandboxes cron