diff --git a/beacon/types/beacon_block.go b/beacon/types/beacon_block.go
index a2e31d5abf..82a0814a9f 100644
--- a/beacon/types/beacon_block.go
+++ b/beacon/types/beacon_block.go
@@ -52,7 +52,7 @@ func BlockFromJSON(forkName string, data []byte) (*BeaconBlock, error) {
 		obj = new(capella.BeaconBlock)
 	case "deneb":
 		obj = new(deneb.BeaconBlock)
-	case "electra":
+	case "electra", "fulu":
 		obj = new(electra.BeaconBlock)
 	default:
 		return nil, fmt.Errorf("unsupported fork: %s", forkName)
diff --git a/beacon/types/exec_header.go b/beacon/types/exec_header.go
index ae79b00841..dbf5c54b36 100644
--- a/beacon/types/exec_header.go
+++ b/beacon/types/exec_header.go
@@ -45,7 +45,7 @@ func ExecutionHeaderFromJSON(forkName string, data []byte) (*ExecutionHeader, er
 	switch forkName {
 	case "capella":
 		obj = new(capella.ExecutionPayloadHeader)
-	case "deneb", "electra": // note: the payload type was not changed in electra
+	case "deneb", "electra", "fulu": // note: the payload type was not changed in electra/fulu
 		obj = new(deneb.ExecutionPayloadHeader)
 	default:
 		return nil, fmt.Errorf("unsupported fork: %s", forkName)