diff --git a/fern/apis/api/openapi.json b/fern/apis/api/openapi.json
index 5549440..7ec05c0 100644
--- a/fern/apis/api/openapi.json
+++ b/fern/apis/api/openapi.json
@@ -4186,10 +4186,9 @@
         "properties": {
           "mode": {
             "type": "string",
-            "description": "This configures how transfer is executed and the experience of the destination party receiving the call.\n\nUsage:\n- `blind-transfer`: The assistant forwards the call to the destination without any message or summary.\n- `blind-transfer-add-summary-to-sip-header`: The assistant forwards the call to the destination and adds a SIP header X-Transfer-Summary to the call to include the summary.\n- `warm-transfer-say-message`: The assistant dials the destination, delivers the `message` to the destination party, connects the customer, and leaves the call.\n- `warm-transfer-say-summary`: The assistant dials the destination, provides a summary of the call to the destination party, connects the customer, and leaves the call.\n- `warm-transfer-wait-for-operator-to-speak-first-and-then-say-message`: The assistant dials the destination, waits for the operator to speak, delivers the `message` to the destination party, and then connects the customer.\n- `warm-transfer-wait-for-operator-to-speak-first-and-then-say-summary`: The assistant dials the destination, waits for the operator to speak, provides a summary of the call to the destination party, and then connects the customer.\n\n@default 'blind-transfer'",
+            "description": "This configures how transfer is executed and the experience of the destination party receiving the call.\n\nUsage:\n- `blind-transfer`: The assistant forwards the call to the destination without any message or summary.\n- `warm-transfer-say-message`: The assistant dials the destination, delivers the `message` to the destination party, connects the customer, and leaves the call.\n- `warm-transfer-say-summary`: The assistant dials the destination, provides a summary of the call to the destination party, connects the customer, and leaves the call.\n- `warm-transfer-wait-for-operator-to-speak-first-and-then-say-message`: The assistant dials the destination, waits for the operator to speak, delivers the `message` to the destination party, and then connects the customer.\n- `warm-transfer-wait-for-operator-to-speak-first-and-then-say-summary`: The assistant dials the destination, waits for the operator to speak, provides a summary of the call to the destination party, and then connects the customer.\n\n@default 'blind-transfer'",
             "enum": [
               "blind-transfer",
-              "blind-transfer-add-summary-to-sip-header",
               "warm-transfer-say-message",
               "warm-transfer-say-summary",
               "warm-transfer-wait-for-operator-to-speak-first-and-then-say-message",
@@ -4312,10 +4311,6 @@
               }
             ]
           },
-          "sipHeaders": {
-            "type": "object",
-            "description": "These are custom headers to be added to SIP refer during transfer call."
-          },
           "description": {
             "type": "string",
             "description": "This is the description of the destination, used by the AI to choose when and how to transfer the call."