diff --git a/api/deneb/executionpayloadandblobsbundle_ssz.go b/api/deneb/executionpayloadandblobsbundle_ssz.go
new file mode 100644
index 0000000..217f38b
--- /dev/null
+++ b/api/deneb/executionpayloadandblobsbundle_ssz.go
@@ -0,0 +1,142 @@
+// Code generated by fastssz. DO NOT EDIT.
+// Hash: 10a07cbc20d028173c2b950c0cc71c32a3a1707e138761dc4753721b2a976658
+// Version: 0.1.3
+package deneb
+
+import (
+	"github.com/attestantio/go-eth2-client/spec/deneb"
+	ssz "github.com/ferranbt/fastssz"
+)
+
+// MarshalSSZ ssz marshals the ExecutionPayloadAndBlobsBundle object
+func (e *ExecutionPayloadAndBlobsBundle) MarshalSSZ() ([]byte, error) {
+	return ssz.MarshalSSZ(e)
+}
+
+// MarshalSSZTo ssz marshals the ExecutionPayloadAndBlobsBundle object to a target array
+func (e *ExecutionPayloadAndBlobsBundle) MarshalSSZTo(buf []byte) (dst []byte, err error) {
+	dst = buf
+	offset := int(8)
+
+	// Offset (0) 'ExecutionPayload'
+	dst = ssz.WriteOffset(dst, offset)
+	if e.ExecutionPayload == nil {
+		e.ExecutionPayload = new(deneb.ExecutionPayload)
+	}
+	offset += e.ExecutionPayload.SizeSSZ()
+
+	// Offset (1) 'BlobsBundle'
+	dst = ssz.WriteOffset(dst, offset)
+	if e.BlobsBundle == nil {
+		e.BlobsBundle = new(BlobsBundle)
+	}
+	offset += e.BlobsBundle.SizeSSZ()
+
+	// Field (0) 'ExecutionPayload'
+	if dst, err = e.ExecutionPayload.MarshalSSZTo(dst); err != nil {
+		return
+	}
+
+	// Field (1) 'BlobsBundle'
+	if dst, err = e.BlobsBundle.MarshalSSZTo(dst); err != nil {
+		return
+	}
+
+	return
+}
+
+// UnmarshalSSZ ssz unmarshals the ExecutionPayloadAndBlobsBundle object
+func (e *ExecutionPayloadAndBlobsBundle) UnmarshalSSZ(buf []byte) error {
+	var err error
+	size := uint64(len(buf))
+	if size < 8 {
+		return ssz.ErrSize
+	}
+
+	tail := buf
+	var o0, o1 uint64
+
+	// Offset (0) 'ExecutionPayload'
+	if o0 = ssz.ReadOffset(buf[0:4]); o0 > size {
+		return ssz.ErrOffset
+	}
+
+	if o0 < 8 {
+		return ssz.ErrInvalidVariableOffset
+	}
+
+	// Offset (1) 'BlobsBundle'
+	if o1 = ssz.ReadOffset(buf[4:8]); o1 > size || o0 > o1 {
+		return ssz.ErrOffset
+	}
+
+	// Field (0) 'ExecutionPayload'
+	{
+		buf = tail[o0:o1]
+		if e.ExecutionPayload == nil {
+			e.ExecutionPayload = new(deneb.ExecutionPayload)
+		}
+		if err = e.ExecutionPayload.UnmarshalSSZ(buf); err != nil {
+			return err
+		}
+	}
+
+	// Field (1) 'BlobsBundle'
+	{
+		buf = tail[o1:]
+		if e.BlobsBundle == nil {
+			e.BlobsBundle = new(BlobsBundle)
+		}
+		if err = e.BlobsBundle.UnmarshalSSZ(buf); err != nil {
+			return err
+		}
+	}
+	return err
+}
+
+// SizeSSZ returns the ssz encoded size in bytes for the ExecutionPayloadAndBlobsBundle object
+func (e *ExecutionPayloadAndBlobsBundle) SizeSSZ() (size int) {
+	size = 8
+
+	// Field (0) 'ExecutionPayload'
+	if e.ExecutionPayload == nil {
+		e.ExecutionPayload = new(deneb.ExecutionPayload)
+	}
+	size += e.ExecutionPayload.SizeSSZ()
+
+	// Field (1) 'BlobsBundle'
+	if e.BlobsBundle == nil {
+		e.BlobsBundle = new(BlobsBundle)
+	}
+	size += e.BlobsBundle.SizeSSZ()
+
+	return
+}
+
+// HashTreeRoot ssz hashes the ExecutionPayloadAndBlobsBundle object
+func (e *ExecutionPayloadAndBlobsBundle) HashTreeRoot() ([32]byte, error) {
+	return ssz.HashWithDefaultHasher(e)
+}
+
+// HashTreeRootWith ssz hashes the ExecutionPayloadAndBlobsBundle object with a hasher
+func (e *ExecutionPayloadAndBlobsBundle) HashTreeRootWith(hh ssz.HashWalker) (err error) {
+	indx := hh.Index()
+
+	// Field (0) 'ExecutionPayload'
+	if err = e.ExecutionPayload.HashTreeRootWith(hh); err != nil {
+		return
+	}
+
+	// Field (1) 'BlobsBundle'
+	if err = e.BlobsBundle.HashTreeRootWith(hh); err != nil {
+		return
+	}
+
+	hh.Merkleize(indx)
+	return
+}
+
+// GetTree ssz hashes the ExecutionPayloadAndBlobsBundle object
+func (e *ExecutionPayloadAndBlobsBundle) GetTree() (*ssz.Node, error) {
+	return ssz.ProofTree(e)
+}