diff --git a/openapi-app.json b/openapi-app.json
index 117da1f..8879a73 100644
--- a/openapi-app.json
+++ b/openapi-app.json
@@ -11191,7 +11191,7 @@
     },
     "/mailbox/messages/{message_id}/attachments/{attachment_id}": {
       "get": {
-        "description": "Streams one attachment from a message. Bearer authentication works as before; attachment metadata also provides short-lived download URLs for clients that cannot add an Authorization header. Supports standard byte ranges.",
+        "description": "Streams one attachment from a message through the authenticated endpoint. Attachment metadata also provides short-lived download URLs for clients that cannot set request headers. Supports standard byte ranges.",
         "operationId": "mailboxGetMessageAttachment",
         "parameters": [
           {
diff --git a/postman/sendmux-mailbox.postman_collection.json b/postman/sendmux-mailbox.postman_collection.json
index 37cb1eb..db784ca 100644
--- a/postman/sendmux-mailbox.postman_collection.json
+++ b/postman/sendmux-mailbox.postman_collection.json
@@ -2537,7 +2537,7 @@
           },
           "request": {
             "description": {
-              "content": "Streams one attachment from a message. Bearer authentication works as before; attachment metadata also provides short-lived download URLs for clients that cannot add an Authorization header. Supports standard byte ranges.",
+              "content": "Streams one attachment from a message through the authenticated endpoint. Attachment metadata also provides short-lived download URLs for clients that cannot set request headers. Supports standard byte ranges.",
               "type": "text/plain"
             },
             "header": [