diff --git a/UNDF-REGISTRY.json b/UNDF-REGISTRY.json
index ad3d75527..5c27ed2a8 100644
--- a/UNDF-REGISTRY.json
+++ b/UNDF-REGISTRY.json
@@ -818,5 +818,6 @@
   "superset-0003": "UNDF-2026-000000817",
   "hive-0002": "UNDF-2026-000000818",
   "hive-0004": "UNDF-2026-000000819",
-  "hive-0005": "UNDF-2026-000000820"
+  "hive-0005": "UNDF-2026-000000820",
+  "loki-0001": "UNDF-2026-000000821"
 }
diff --git a/defects/loki/patch/loki-0001-dag-edge-dedup.patch b/defects/loki/patch/loki-0001-dag-edge-dedup.patch
index 28275de6b..cc84b6efe 100644
--- a/defects/loki/patch/loki-0001-dag-edge-dedup.patch
+++ b/defects/loki/patch/loki-0001-dag-edge-dedup.patch
@@ -1,3 +1,4 @@
+# UNDF: UNDF-2026-000000821
 # UNDF: (leave blank)
 # CWE-407: DAG AddEdge/Eliminate slices.Contains on children/parents O(E^2)
 # File: pkg/engine/internal/util/dag/dag.go