diff --git a/ZB.MOM.WW.Secrets/CHANGELOG.md b/ZB.MOM.WW.Secrets/CHANGELOG.md
index 00cbe84..38639b1 100644
--- a/ZB.MOM.WW.Secrets/CHANGELOG.md
+++ b/ZB.MOM.WW.Secrets/CHANGELOG.md
@@ -5,6 +5,27 @@ follows [Keep a Changelog](https://keepachangelog.com/); versions are shared acr
 package in the family (see `Directory.Build.props`) even when a given release only touches
 one of them.
 
+## 0.6.3 — 2026-09-28
+
+### Added
+
+- **gRPC hub follower sweeps are observable.** `GrpcSecretSyncService` (package
+  `ZB.MOM.WW.Secrets.Replicator.Grpc`) now logs every sweep outcome instead of only the sweeps
+  that pull a change:
+  - `EventId 4` (Debug) — a sweep found nothing new; logged on every in-sync sweep.
+  - `EventId 5` (Information) — an in-sync heartbeat, at most once per
+    `SecretsGrpcHubClientOptions.InSyncLogInterval` (new, default 1 hour, validated positive), so
+    "the loop is alive and still agrees with the hub" is visible at the default log level without
+    a line every 30 seconds.
+  - `EventId 6` (Information) — the first successful sweep after one or more failures, naming
+    the failure count.
+- **`ISecretsHubSyncStatus`** — a public, DI-registered read model of the follower loop:
+  `LastSweepUtc`, `LastSuccessUtc`, `ConsecutiveFailures`, `LastError`. Getters are synchronized
+  with the writer, so a health check or status page reads a consistent snapshot.
+
+No behaviour change to syncing itself, and no wire or schema change. Only hub followers gain
+anything from this release; other consumers can stay on 0.6.2.
+
 ## 0.6.2 — 2026-08-11
 
 ### Changed