diff --git a/objects/person/definition.json b/objects/person/definition.json
index 484cc99..6e25459 100644
--- a/objects/person/definition.json
+++ b/objects/person/definition.json
@@ -66,6 +66,11 @@
       ],
       "disable_correlation": true
     },
+    "id-card-number": {
+      "description": "The identity card number of a natural person.",
+      "ui-priority": 0,
+      "misp-attribute": "id-card-number"
+    },
     "passport-number": {
       "description": "The passport number of a natural person.",
       "ui-priority": 0,