diff --git a/src/engine/cancun.md b/src/engine/cancun.md
index 0b756cc8..5e19c9b7 100644
--- a/src/engine/cancun.md
+++ b/src/engine/cancun.md
@@ -9,8 +9,23 @@ This specificaiton is based on and extends [Engine API - Shanghai](./shanghai.md
 <!-- START doctoc generated TOC please keep comment here to allow auto update -->
 <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
 
+- [Structures](#structures)
+  - [ExecutionPayloadV3](#executionpayloadv3)
+  - [BlobsBundleV1](#blobsbundlev1)
+- [Methods](#methods)
+  - [engine_newPayloadV3](#engine_newpayloadv3)
+    - [Request](#request)
+    - [Response](#response)
+    - [Specification](#specification)
+  - [engine_getPayloadV3](#engine_getpayloadv3)
+    - [Request](#request-1)
+    - [Response](#response-1)
+    - [Specification](#specification-1)
+
 <!-- END doctoc generated TOC please keep comment here to allow auto update -->
 
+## Structures
+
 ### ExecutionPayloadV3
 
 This structure has the syntax of [`ExecutionPayloadV2`](./shanghai.md#executionpayloadv2) and append two new fields: `dataGasUsed` and `excessDataGas`.