diff --git a/objects/person/definition.json b/objects/person/definition.json
index 1f71dea..4944afe 100644
--- a/objects/person/definition.json
+++ b/objects/person/definition.json
@@ -75,6 +75,31 @@
       "misp-attribute": "identity-card-number",
       "ui-priority": 0
     },
+    "instant-messaging-used": {
+      "description": "The IM application used by this person.",
+      "disable_correlation": true,
+      "misp-attribute": "text",
+      "multiple": "true",
+      "sane_default": [
+        "WhatsApp",
+        "Google Hangouts",
+        "Facebook Messenger",
+        "Telegram",
+        "Signal",
+        "WeChat",
+        "BlackBerry Messenger",
+        "TeamSpeak",
+        "TorChat",
+        "Tox",
+        "RetroShare",
+        "Slack",
+        "Wire",
+        "Threema",
+        "Discord",
+        "Mumble"
+      ],
+      "ui-priority": 10
+    },
     "last-name": {
       "description": "Last name of a natural person.",
       "misp-attribute": "last-name",
@@ -215,5 +240,5 @@
     "alias"
   ],
   "uuid": "a15b0477-e9d1-4b9c-9546-abe78a4f4248",
-  "version": 14
+  "version": 16
 }
\ No newline at end of file