diff --git a/charts/vergabe-teilnahme/templates/_helpers.tpl b/charts/vergabe-teilnahme/templates/_helpers.tpl
index 22b9774..50c93cb 100644
--- a/charts/vergabe-teilnahme/templates/_helpers.tpl
+++ b/charts/vergabe-teilnahme/templates/_helpers.tpl
@@ -13,6 +13,7 @@ app.kubernetes.io/managed-by: {{ .Release.Service }}
 app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
 app.kubernetes.io/part-of: railiance-apps
 helm.sh/chart: {{ printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" }}
+railiance.io/release-unit: vergabe
 {{- end -}}
 
 {{- define "vergabe.selectorLabels" -}}
diff --git a/helm/vergabe-teilnahme-values.yaml b/helm/vergabe-teilnahme-values.yaml
index 9b62ba0..72def91 100644
--- a/helm/vergabe-teilnahme-values.yaml
+++ b/helm/vergabe-teilnahme-values.yaml
@@ -5,6 +5,8 @@
 image:
   repository: forgejo.coulomb.social/coulomb/vergabe-teilnahme
   tag: "064d295"           # Forgejo-only uv.lock (issue-core 0.2.1 from Forgejo PyPI)
+  # The chart prefers digest. This is the digest running in vergabe-demo-company.
+  digest: "sha256:a26444f59c259698159c69ccb96f73dc648a261ece4c86bb2037a9d977870d91"
 
 env:
   DJANGO_SETTINGS_MODULE: vergabe_teilnahme.settings.prod
diff --git a/registry/release-units/vergabe.yaml b/registry/release-units/vergabe.yaml
new file mode 100644
index 0000000..6f99cde
--- /dev/null
+++ b/registry/release-units/vergabe.yaml
@@ -0,0 +1,67 @@
+# Source digests are the commits this declaration was written against.
+# The database is the logical database vergabe_demo_company on the shared
+# apps-pg cluster. This unit does not claim that StatefulSet.
+kind: release-unit
+unit_id: vergabe
+owner: railiance-apps
+contract_version: "1.0.0"
+data_classification: confidential
+criticality: high
+composition:
+  purpose: "Serves the Vergabe participation application for one company."
+  member_repos:
+    - repo: railiance-apps
+      role: rollout owner
+      deployables:
+        - vergabe
+    - repo: vergabe-teilnahme
+      role: application source
+      deployables:
+        - vergabe-teilnahme
+rollout_contract:
+  default_mode: helm-upgrade-install
+smoke_contract:
+  required:
+    - http-ready
+rollback_contract:
+  order:
+    - helm-rollback
+workloads:
+  - kind: Deployment
+    namespace: vergabe-demo-company
+    name: vergabe-teilnahme
+depends_on:
+  - unit_id: vergabe-db
+    readiness: available
+    version: "1.0.0"
+pins:
+  component:
+    name: ocm.railiance.dev/vergabe
+    version: "0.2.1"
+  resources:
+    - name: vergabe-teilnahme
+      type: ociImage
+      version: "0.2.1"
+      digest:
+        hashAlgorithm: SHA-256
+        normalisationAlgorithm: ociArtifactDigest/v1
+        value: "sha256:a26444f59c259698159c69ccb96f73dc648a261ece4c86bb2037a9d977870d91"
+  sources:
+    - name: railiance-apps
+      type: git
+      version: "0.2.1"
+      digest:
+        hashAlgorithm: SHA-1
+        normalisationAlgorithm: gitCommit/v1
+        value: "e9d2b5f39a6fe1c4accb5c54e3ba0b37d05b23ee"
+    - name: vergabe-teilnahme
+      type: git
+      version: "0.2.1"
+      digest:
+        hashAlgorithm: SHA-1
+        normalisationAlgorithm: gitCommit/v1
+        value: "dca6683a8ab7d4aa0de2a537924f73318b199f60"
+  references:
+    - name: database
+      componentName: vergabe-db
+      version: "1.0.0"