diff --git a/UNDF-REGISTRY.json b/UNDF-REGISTRY.json
index d3ef003db..cf6eb5024 100644
--- a/UNDF-REGISTRY.json
+++ b/UNDF-REGISTRY.json
@@ -598,5 +598,6 @@
   "jackson-0002": "UNDF-2026-000000597",
   "eclipse-jdt-0002": "UNDF-2026-000000598",
   "graal-0001": "UNDF-2026-000000599",
-  "graal-0002": "UNDF-2026-000000600"
+  "graal-0002": "UNDF-2026-000000600",
+  "hazelcast-0003": "UNDF-2026-000000601"
 }
diff --git a/defects/hazelcast/patch/hazelcast-0002-classloaderutil-addowninterfaces-diamond.md b/defects/hazelcast/patch/hazelcast-0002-classloaderutil-addowninterfaces-diamond.md
index e44ac1373..8d0cb6163 100644
--- a/defects/hazelcast/patch/hazelcast-0002-classloaderutil-addowninterfaces-diamond.md
+++ b/defects/hazelcast/patch/hazelcast-0002-classloaderutil-addowninterfaces-diamond.md
@@ -1,3 +1,4 @@
+# UNDF: UNDF-2026-000000416
 # UNDF: (pending)
 # hazelcast-0002: ClassLoaderUtil.addOwnInterfaces — O(2^D) diamond re-traversal; Collections.addAll() return value ignored
 
diff --git a/defects/hazelcast/patch/hazelcast-0003-probeutils-flatten-diamond.md b/defects/hazelcast/patch/hazelcast-0003-probeutils-flatten-diamond.md
index 7d32d5d6a..679c68527 100644
--- a/defects/hazelcast/patch/hazelcast-0003-probeutils-flatten-diamond.md
+++ b/defects/hazelcast/patch/hazelcast-0003-probeutils-flatten-diamond.md
@@ -1,3 +1,4 @@
+# UNDF: UNDF-2026-000000601
 # UNDF: (pending)
 # hazelcast-0003: ProbeUtils.flatten — O(2^D) diamond re-traversal; result.add() return value ignored before recursion