diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 7c312d7..e4ce988 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,5 +1,5 @@
 {
-  "charts/ontoserver": "0.4.1",
+  "charts/ontoserver": "0.5.0",
   "charts/ontoserver-extras": "0.1.2",
   "charts/ontoserver-indexer": "0.2.1"
 }
diff --git a/CLAUDE.md b/CLAUDE.md
index 963c917..45357ee 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -30,4 +30,4 @@ The traps, in short:
   without it Release Please rewrites a release branch only when the generated *release notes*
   change, so a straggler keeps a stale base and conflicts. Don't remove that flag.
 
-Current releases: `ontoserver` 0.4.1, `ontoserver-extras` 0.1.2, `ontoserver-indexer` 0.2.1.
+Current releases: `ontoserver` 0.5.0, `ontoserver-extras` 0.1.2, `ontoserver-indexer` 0.2.1.
diff --git a/RELEASE.md b/RELEASE.md
index 24f7aae..a918e4c 100644
--- a/RELEASE.md
+++ b/RELEASE.md
@@ -374,7 +374,7 @@ generated GitHub Release notes carry that information.
 
 | Chart | Latest release | Notes |
 |---|---|---|
-| `ontoserver` | **0.4.1** | |
+| `ontoserver` | **0.5.0** | Adds `deployment.podManagementPolicy` and the OTel metrics/logs exporter values; restores the empty `serverPort` default |
 | `ontoserver-extras` | **0.1.2** | |
 | `ontoserver-indexer` | **0.2.1** | |
 
diff --git a/charts/ontoserver/Chart.yaml b/charts/ontoserver/Chart.yaml
index 9896c47..ec32e8e 100644
--- a/charts/ontoserver/Chart.yaml
+++ b/charts/ontoserver/Chart.yaml
@@ -3,7 +3,7 @@ name: ontoserver
 description: Ontoserver FHIR terminology server helm chart with various
   deployment configurations
 type: application
-version: 0.4.1
+version: 0.5.0
 appVersion: "ctsa-6"
 home: https://ontoserver.csiro.au
 icon: https://raw.githubusercontent.com/aehrc/ontoserver-deploy/master/icons/ontoserver.png
@@ -24,5 +24,9 @@ annotations:
   # Please, not an in-development one. Release Please bumps `version:` but does NOT touch this list,
   # so update it in the release PR before merging or it will silently describe the previous release.
   artifacthub.io/changes: |
-    - kind: fixed
-      description: README.md is now included in the packaged chart, so it renders on Artifact Hub
+    - kind: added
+      description: ontoserver.deployment.podManagementPolicy exposes the StatefulSet pod management policy (default Parallel, unchanged); set OrderedReady to keep a ready endpoint through a multi-replica rolling update
+    - kind: added
+      description: ontoserver.opentelemetry.instrumentation.metricsExporter and logsExporter set OTEL_METRICS_EXPORTER and OTEL_LOGS_EXPORTER (both default none, unchanged); use otlp for JVM heap and GC metrics
+    - kind: changed
+      description: 'ontoserver.serverPort now defaults to empty again, as it did before 0.4.0. Installs on 0.4.0 or 0.4.1 that never set it inherited "8080" and published host:8080 in the CapabilityStatement and canonical URLs; set serverPort explicitly if you relied on that'
diff --git a/charts/ontoserver/changelog.md b/charts/ontoserver/changelog.md
index e14d2aa..9fc1b19 100644
--- a/charts/ontoserver/changelog.md
+++ b/charts/ontoserver/changelog.md
@@ -5,6 +5,25 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.5.0](https://github.com/aehrc/ontoserver-deploy/compare/ontoserver-v0.4.1...ontoserver-v0.5.0) (2026-08-13)
+
+
+### Added
+
+* **ontoserver:** expose OTel metrics and logs exporters ([46a37e2](https://github.com/aehrc/ontoserver-deploy/commit/46a37e21ba3faf09355c3ac1479712bbfd586631))
+* **ontoserver:** expose StatefulSet podManagementPolicy ([f960874](https://github.com/aehrc/ontoserver-deploy/commit/f960874038aabbc4319fb72cf0d247ccb38a05ae))
+
+
+### Fixed
+
+* **ontoserver:** restore empty serverPort default ([d76637a](https://github.com/aehrc/ontoserver-deploy/commit/d76637af84f55a396b62df90157d31c5745f189d))
+
+
+### Documentation
+
+* **ontoserver:** document podManagementPolicy, exporters and serverPort ([95b54f4](https://github.com/aehrc/ontoserver-deploy/commit/95b54f42490e56f0838562ea888dc4b1384e908c))
+* **ontoserver:** regenerate README parameter tables ([12f9c78](https://github.com/aehrc/ontoserver-deploy/commit/12f9c78daafa2ca6562a89cc2ab3990a916efd91))
+
 ## [0.4.1](https://github.com/aehrc/ontoserver-deploy/compare/ontoserver-0.4.0...ontoserver-v0.4.1) (2026-08-13)