diff --git a/src/engine/README.md b/src/engine/README.md
index 79996c61b..9c7f6ac2e 100644
--- a/src/engine/README.md
+++ b/src/engine/README.md
@@ -3,4 +3,7 @@
 The Engine JSON-RPC API is a collection of methods that all execution clients implement.
 This interface allows the communication between consensus and execution layers of the two-component post-Merge Ethereum Client.
 
-This API is in *active development* and currently specified in markdown documents specified by fork scopes ([Paris](./paris.md), [Shanghai](./shanghai.md)). A schema will follow once the specification stabilizes.
+This API is in *active development* and currently specified in markdown documents specified by fork scopes ([Paris](./paris.md), [Shanghai](./shanghai.md), [Cancun](./cancun.md)).
+
+## References
+* [Engine API: A Visual Guide](https://hackmd.io/@danielrachi/engine_api)