diff --git a/defects/hazelcast/patch/hazelcast-0001-serializationutil-getinterfaces-diamond.md b/defects/hazelcast/patch/hazelcast-0001-serializationutil-getinterfaces-diamond.md
index bd69629df..708a3d3c5 100644
--- a/defects/hazelcast/patch/hazelcast-0001-serializationutil-getinterfaces-diamond.md
+++ b/defects/hazelcast/patch/hazelcast-0001-serializationutil-getinterfaces-diamond.md
@@ -1,3 +1,4 @@
+# UNDF: UNDF-2026-000000415
 # UNDF: (pending)
 # hazelcast-0001: SerializationUtil.getInterfaces — O(2^D) diamond re-traversal; Collections.addAll() return value ignored