diff --git a/CHANGELOG.md b/CHANGELOG.md
index b61d086..da50ad9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Add `io.giantswarm.application.audience` and `io.giantswarm.application.managed` chart annotations for Backstage visibility.
+
+### Changed
+
+- Migrate chart metadata annotations to OCI-compatible format.
+
 ## [1.0.1] - 2025-12-05
 
 ### Changed
diff --git a/helm/gel/.kube-linter.yaml b/helm/gel/.kube-linter.yaml
index 56c57bf..9ae1d5a 100644
--- a/helm/gel/.kube-linter.yaml
+++ b/helm/gel/.kube-linter.yaml
@@ -10,3 +10,5 @@ checks:
     - "no-node-affinity"
     - "minimum-three-replicas"
     - "dangling-networkpolicy"
+    - "sorted-keys"  # Sorting YAML keys alphabetically is not a priority.
+    - "env-value-from"  # Secret is created dynamically by CloudNativePG Cluster CRD.
diff --git a/helm/gel/Chart.yaml b/helm/gel/Chart.yaml
index e9e44b7..c1fefbb 100644
--- a/helm/gel/Chart.yaml
+++ b/helm/gel/Chart.yaml
@@ -10,5 +10,6 @@ sources:
   - https://github.com/Japan7/nanak8s/tree/main/charts/edgedb
 version: 1.0.1
 annotations:
-  application.giantswarm.io/team: "shield"
-  config.giantswarm.io/version: 1.x.x
+  io.giantswarm.application.audience: all
+  io.giantswarm.application.managed: "true"
+  io.giantswarm.application.team: "shield"
diff --git a/helm/gel/templates/_helpers.tpl b/helm/gel/templates/_helpers.tpl
index cfcbfa8..38f2a2e 100644
--- a/helm/gel/templates/_helpers.tpl
+++ b/helm/gel/templates/_helpers.tpl
@@ -42,7 +42,7 @@ app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
 app.kubernetes.io/managed-by: {{ .Release.Service }}
 application.giantswarm.io/branch: {{ .Chart.Annotations.branch | replace "#" "-" | replace "/" "-" | replace "." "-" | trunc 63 | trimSuffix "-" | quote }}
 application.giantswarm.io/commit: {{ .Chart.Annotations.commit | quote }}
-application.giantswarm.io/team: {{ index .Chart.Annotations "application.giantswarm.io/team" | quote }}
+application.giantswarm.io/team: {{ index .Chart.Annotations "io.giantswarm.application.team" | quote }}
 giantswarm.io/managed-by: {{ .Release.Name | quote }}
 giantswarm.io/service-type: {{ .Values.serviceType }}
 {{- end }}