diff --git a/registry/release-units/user-engine.yaml b/registry/release-units/user-engine.yaml
new file mode 100644
index 0000000..8e5c615
--- /dev/null
+++ b/registry/release-units/user-engine.yaml
@@ -0,0 +1,54 @@
+# No owner classification file. Recorded confidential/high for this wave.
+kind: release-unit
+unit_id: user-engine
+owner: user-engine
+contract_version: 1.0.0
+data_classification: confidential
+criticality: high
+composition:
+  purpose: Covers the live user-engine workloads as one release unit.
+  member_repos:
+  - repo: user-engine
+    role: rollout owner
+    deployables:
+    - user-engine
+    - user-engine-backup
+    - user-engine-restore-drill
+rollout_contract:
+  default_mode: owner-deploy
+smoke_contract:
+  required:
+  - workload-ready
+rollback_contract:
+  order:
+  - owner-rollback
+workloads:
+- kind: Deployment
+  namespace: user-engine
+  name: user-engine
+- kind: CronJob
+  namespace: user-engine
+  name: user-engine-backup
+- kind: Job
+  namespace: user-engine
+  name: user-engine-restore-drill
+pins:
+  component:
+    name: ocm.railiance.dev/user-engine
+    version: live
+  resources:
+  - name: user-engine
+    type: ociImage
+    version: live
+    digest:
+      hashAlgorithm: SHA-256
+      normalisationAlgorithm: ociArtifactDigest/v1
+      value: sha256:1e6547c40c93c49f01438edcf76c20f561ccebc110220bae020723505aa56c70
+  sources:
+  - name: user-engine
+    type: git
+    version: live
+    digest:
+      hashAlgorithm: SHA-1
+      normalisationAlgorithm: gitCommit/v1
+      value: 2a06a4d2bf8a3f0a017ce016df832a774f7c354b