diff --git a/api/deneb/blindedblobsbundle_ssz.go b/api/deneb/blindedblobsbundle_ssz.go
index 0ad3c27..5582575 100644
--- a/api/deneb/blindedblobsbundle_ssz.go
+++ b/api/deneb/blindedblobsbundle_ssz.go
@@ -1,5 +1,5 @@
 // Code generated by fastssz. DO NOT EDIT.
-// Hash: f7d4b7227dc3b524b3fb633095154ac7b2b48cba8b4007551f73e34360ab96c3
+// Hash: 38b1a2605bf26b45e7795273db7872157e4d0e24c0dd59c99bbfa4863b462eeb
 // Version: 0.1.3
 package deneb
 
@@ -32,8 +32,8 @@ func (b *BlindedBlobsBundle) MarshalSSZTo(buf []byte) (dst []byte, err error) {
 	offset += len(b.BlobRoots) * 32
 
 	// Field (0) 'Commitments'
-	if size := len(b.Commitments); size > 4 {
-		err = ssz.ErrListTooBigFn("BlindedBlobsBundle.Commitments", size, 4)
+	if size := len(b.Commitments); size > 6 {
+		err = ssz.ErrListTooBigFn("BlindedBlobsBundle.Commitments", size, 6)
 		return
 	}
 	for ii := 0; ii < len(b.Commitments); ii++ {
@@ -41,8 +41,8 @@ func (b *BlindedBlobsBundle) MarshalSSZTo(buf []byte) (dst []byte, err error) {
 	}
 
 	// Field (1) 'Proofs'
-	if size := len(b.Proofs); size > 4 {
-		err = ssz.ErrListTooBigFn("BlindedBlobsBundle.Proofs", size, 4)
+	if size := len(b.Proofs); size > 6 {
+		err = ssz.ErrListTooBigFn("BlindedBlobsBundle.Proofs", size, 6)
 		return
 	}
 	for ii := 0; ii < len(b.Proofs); ii++ {
@@ -50,8 +50,8 @@ func (b *BlindedBlobsBundle) MarshalSSZTo(buf []byte) (dst []byte, err error) {
 	}
 
 	// Field (2) 'BlobRoots'
-	if size := len(b.BlobRoots); size > 4 {
-		err = ssz.ErrListTooBigFn("BlindedBlobsBundle.BlobRoots", size, 4)
+	if size := len(b.BlobRoots); size > 6 {
+		err = ssz.ErrListTooBigFn("BlindedBlobsBundle.BlobRoots", size, 6)
 		return
 	}
 	for ii := 0; ii < len(b.BlobRoots); ii++ {
@@ -94,7 +94,7 @@ func (b *BlindedBlobsBundle) UnmarshalSSZ(buf []byte) error {
 	// Field (0) 'Commitments'
 	{
 		buf = tail[o0:o1]
-		num, err := ssz.DivideInt2(len(buf), 48, 4)
+		num, err := ssz.DivideInt2(len(buf), 48, 6)
 		if err != nil {
 			return err
 		}
@@ -107,7 +107,7 @@ func (b *BlindedBlobsBundle) UnmarshalSSZ(buf []byte) error {
 	// Field (1) 'Proofs'
 	{
 		buf = tail[o1:o2]
-		num, err := ssz.DivideInt2(len(buf), 48, 4)
+		num, err := ssz.DivideInt2(len(buf), 48, 6)
 		if err != nil {
 			return err
 		}
@@ -120,7 +120,7 @@ func (b *BlindedBlobsBundle) UnmarshalSSZ(buf []byte) error {
 	// Field (2) 'BlobRoots'
 	{
 		buf = tail[o2:]
-		num, err := ssz.DivideInt2(len(buf), 32, 4)
+		num, err := ssz.DivideInt2(len(buf), 32, 6)
 		if err != nil {
 			return err
 		}
@@ -159,8 +159,8 @@ func (b *BlindedBlobsBundle) HashTreeRootWith(hh ssz.HashWalker) (err error) {
 
 	// Field (0) 'Commitments'
 	{
-		if size := len(b.Commitments); size > 4 {
-			err = ssz.ErrListTooBigFn("BlindedBlobsBundle.Commitments", size, 4)
+		if size := len(b.Commitments); size > 6 {
+			err = ssz.ErrListTooBigFn("BlindedBlobsBundle.Commitments", size, 6)
 			return
 		}
 		subIndx := hh.Index()
@@ -168,13 +168,13 @@ func (b *BlindedBlobsBundle) HashTreeRootWith(hh ssz.HashWalker) (err error) {
 			hh.PutBytes(i[:])
 		}
 		numItems := uint64(len(b.Commitments))
-		hh.MerkleizeWithMixin(subIndx, numItems, 4)
+		hh.MerkleizeWithMixin(subIndx, numItems, 6)
 	}
 
 	// Field (1) 'Proofs'
 	{
-		if size := len(b.Proofs); size > 4 {
-			err = ssz.ErrListTooBigFn("BlindedBlobsBundle.Proofs", size, 4)
+		if size := len(b.Proofs); size > 6 {
+			err = ssz.ErrListTooBigFn("BlindedBlobsBundle.Proofs", size, 6)
 			return
 		}
 		subIndx := hh.Index()
@@ -182,13 +182,13 @@ func (b *BlindedBlobsBundle) HashTreeRootWith(hh ssz.HashWalker) (err error) {
 			hh.PutBytes(i[:])
 		}
 		numItems := uint64(len(b.Proofs))
-		hh.MerkleizeWithMixin(subIndx, numItems, 4)
+		hh.MerkleizeWithMixin(subIndx, numItems, 6)
 	}
 
 	// Field (2) 'BlobRoots'
 	{
-		if size := len(b.BlobRoots); size > 4 {
-			err = ssz.ErrListTooBigFn("BlindedBlobsBundle.BlobRoots", size, 4)
+		if size := len(b.BlobRoots); size > 6 {
+			err = ssz.ErrListTooBigFn("BlindedBlobsBundle.BlobRoots", size, 6)
 			return
 		}
 		subIndx := hh.Index()
@@ -196,7 +196,7 @@ func (b *BlindedBlobsBundle) HashTreeRootWith(hh ssz.HashWalker) (err error) {
 			hh.Append(i[:])
 		}
 		numItems := uint64(len(b.BlobRoots))
-		hh.MerkleizeWithMixin(subIndx, numItems, 4)
+		hh.MerkleizeWithMixin(subIndx, numItems, 6)
 	}
 
 	hh.Merkleize(indx)
diff --git a/api/deneb/blobsbundle_ssz.go b/api/deneb/blobsbundle_ssz.go
index da07d07..bd76259 100644
--- a/api/deneb/blobsbundle_ssz.go
+++ b/api/deneb/blobsbundle_ssz.go
@@ -1,5 +1,5 @@
 // Code generated by fastssz. DO NOT EDIT.
-// Hash: c6b76f7f064aa399e33e95fc859f9dcc33fbe18976165fbb88abb8f54f1f9350
+// Hash: ab124b93579f8996010b3c7fe144fdc154d151bbcb4848aa2eb177c45631019e
 // Version: 0.1.3
 package deneb
 
@@ -31,8 +31,8 @@ func (b *BlobsBundle) MarshalSSZTo(buf []byte) (dst []byte, err error) {
 	offset += len(b.Blobs) * 131072
 
 	// Field (0) 'Commitments'
-	if size := len(b.Commitments); size > 4 {
-		err = ssz.ErrListTooBigFn("BlobsBundle.Commitments", size, 4)
+	if size := len(b.Commitments); size > 6 {
+		err = ssz.ErrListTooBigFn("BlobsBundle.Commitments", size, 6)
 		return
 	}
 	for ii := 0; ii < len(b.Commitments); ii++ {
@@ -40,8 +40,8 @@ func (b *BlobsBundle) MarshalSSZTo(buf []byte) (dst []byte, err error) {
 	}
 
 	// Field (1) 'Proofs'
-	if size := len(b.Proofs); size > 4 {
-		err = ssz.ErrListTooBigFn("BlobsBundle.Proofs", size, 4)
+	if size := len(b.Proofs); size > 6 {
+		err = ssz.ErrListTooBigFn("BlobsBundle.Proofs", size, 6)
 		return
 	}
 	for ii := 0; ii < len(b.Proofs); ii++ {
@@ -49,8 +49,8 @@ func (b *BlobsBundle) MarshalSSZTo(buf []byte) (dst []byte, err error) {
 	}
 
 	// Field (2) 'Blobs'
-	if size := len(b.Blobs); size > 4 {
-		err = ssz.ErrListTooBigFn("BlobsBundle.Blobs", size, 4)
+	if size := len(b.Blobs); size > 6 {
+		err = ssz.ErrListTooBigFn("BlobsBundle.Blobs", size, 6)
 		return
 	}
 	for ii := 0; ii < len(b.Blobs); ii++ {
@@ -93,7 +93,7 @@ func (b *BlobsBundle) UnmarshalSSZ(buf []byte) error {
 	// Field (0) 'Commitments'
 	{
 		buf = tail[o0:o1]
-		num, err := ssz.DivideInt2(len(buf), 48, 4)
+		num, err := ssz.DivideInt2(len(buf), 48, 6)
 		if err != nil {
 			return err
 		}
@@ -106,7 +106,7 @@ func (b *BlobsBundle) UnmarshalSSZ(buf []byte) error {
 	// Field (1) 'Proofs'
 	{
 		buf = tail[o1:o2]
-		num, err := ssz.DivideInt2(len(buf), 48, 4)
+		num, err := ssz.DivideInt2(len(buf), 48, 6)
 		if err != nil {
 			return err
 		}
@@ -119,7 +119,7 @@ func (b *BlobsBundle) UnmarshalSSZ(buf []byte) error {
 	// Field (2) 'Blobs'
 	{
 		buf = tail[o2:]
-		num, err := ssz.DivideInt2(len(buf), 131072, 4)
+		num, err := ssz.DivideInt2(len(buf), 131072, 6)
 		if err != nil {
 			return err
 		}
@@ -158,8 +158,8 @@ func (b *BlobsBundle) HashTreeRootWith(hh ssz.HashWalker) (err error) {
 
 	// Field (0) 'Commitments'
 	{
-		if size := len(b.Commitments); size > 4 {
-			err = ssz.ErrListTooBigFn("BlobsBundle.Commitments", size, 4)
+		if size := len(b.Commitments); size > 6 {
+			err = ssz.ErrListTooBigFn("BlobsBundle.Commitments", size, 6)
 			return
 		}
 		subIndx := hh.Index()
@@ -167,13 +167,13 @@ func (b *BlobsBundle) HashTreeRootWith(hh ssz.HashWalker) (err error) {
 			hh.PutBytes(i[:])
 		}
 		numItems := uint64(len(b.Commitments))
-		hh.MerkleizeWithMixin(subIndx, numItems, 4)
+		hh.MerkleizeWithMixin(subIndx, numItems, 6)
 	}
 
 	// Field (1) 'Proofs'
 	{
-		if size := len(b.Proofs); size > 4 {
-			err = ssz.ErrListTooBigFn("BlobsBundle.Proofs", size, 4)
+		if size := len(b.Proofs); size > 6 {
+			err = ssz.ErrListTooBigFn("BlobsBundle.Proofs", size, 6)
 			return
 		}
 		subIndx := hh.Index()
@@ -181,13 +181,13 @@ func (b *BlobsBundle) HashTreeRootWith(hh ssz.HashWalker) (err error) {
 			hh.PutBytes(i[:])
 		}
 		numItems := uint64(len(b.Proofs))
-		hh.MerkleizeWithMixin(subIndx, numItems, 4)
+		hh.MerkleizeWithMixin(subIndx, numItems, 6)
 	}
 
 	// Field (2) 'Blobs'
 	{
-		if size := len(b.Blobs); size > 4 {
-			err = ssz.ErrListTooBigFn("BlobsBundle.Blobs", size, 4)
+		if size := len(b.Blobs); size > 6 {
+			err = ssz.ErrListTooBigFn("BlobsBundle.Blobs", size, 6)
 			return
 		}
 		subIndx := hh.Index()
@@ -195,7 +195,7 @@ func (b *BlobsBundle) HashTreeRootWith(hh ssz.HashWalker) (err error) {
 			hh.PutBytes(i[:])
 		}
 		numItems := uint64(len(b.Blobs))
-		hh.MerkleizeWithMixin(subIndx, numItems, 4)
+		hh.MerkleizeWithMixin(subIndx, numItems, 6)
 	}
 
 	hh.Merkleize(indx)