diff --git a/server/ui/api/v1/swagger.json b/server/ui/api/v1/swagger.json
index b49e4ca..aef41e8 100644
--- a/server/ui/api/v1/swagger.json
+++ b/server/ui/api/v1/swagger.json
@@ -1392,6 +1392,10 @@
           "description": "Whether the HTML check has been globally disabled",
           "type": "boolean"
         },
+        "DuplicatesIgnored": {
+          "description": "Whether messages with duplicate IDs are ignored",
+          "type": "boolean"
+        },
         "MessageRelay": {
           "description": "Message Relay information",
           "type": "object",