diff --git a/objects/summariser-output/definition.json b/objects/summariser-output/definition.json
index 8e6320e2..c44b5cc6 100644
--- a/objects/summariser-output/definition.json
+++ b/objects/summariser-output/definition.json
@@ -35,7 +35,8 @@
         "gpt-4",
         "gpt-4-turbo",
         "gpt-4-o",
-        "gpt-4o-mini"
+        "gpt-4o-mini",
+        "o3-mini"
       ],
       "ui-priority": 0
     },
@@ -74,6 +75,7 @@
       "description": "TTP of the original text extracted by the AI-based or NLP-based summariser.",
       "disable_correlation": true,
       "misp-attribute": "text",
+      "multiple": true,
       "ui-priority": 0
     }
   },
@@ -85,4 +87,4 @@
   ],
   "uuid": "38633d19-123a-4b0f-bc4a-ccb381e58e49",
   "version": 1
-}
\ No newline at end of file
+}