diff --git a/proto/engine/v1/execution_engine.pb.go b/proto/engine/v1/execution_engine.pb.go
index a6afd7fec..f773ed44b 100755
--- a/proto/engine/v1/execution_engine.pb.go
+++ b/proto/engine/v1/execution_engine.pb.go
@@ -1773,9 +1773,9 @@ type BlindedBlobsBundle struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	KzgCommitments [][]byte `protobuf:"bytes,1,rep,name=kzg_commitments,json=kzgCommitments,proto3" json:"kzg_commitments,omitempty" ssz-max:"4" ssz-size:"?,48"`
-	Proofs         [][]byte `protobuf:"bytes,2,rep,name=proofs,proto3" json:"proofs,omitempty" ssz-max:"4" ssz-size:"?,48"`
-	BlobRoots      [][]byte `protobuf:"bytes,3,rep,name=blob_roots,json=blobRoots,proto3" json:"blob_roots,omitempty" ssz-max:"4" ssz-size:"?,32"`
+	KzgCommitments [][]byte `protobuf:"bytes,1,rep,name=kzg_commitments,json=kzgCommitments,proto3" json:"kzg_commitments,omitempty" ssz-max:"4096" ssz-size:"?,48"`
+	Proofs         [][]byte `protobuf:"bytes,2,rep,name=proofs,proto3" json:"proofs,omitempty" ssz-max:"4096" ssz-size:"?,48"`
+	BlobRoots      [][]byte `protobuf:"bytes,3,rep,name=blob_roots,json=blobRoots,proto3" json:"blob_roots,omitempty" ssz-max:"4096" ssz-size:"?,32"`
 }
 
 func (x *BlindedBlobsBundle) Reset() {
@@ -2318,34 +2318,34 @@ var file_proto_engine_v1_execution_engine_proto_rawDesc = []byte{
 	0x6f, 0x66, 0x73, 0x12, 0x2a, 0x0a, 0x05, 0x62, 0x6c, 0x6f, 0x62, 0x73, 0x18, 0x03, 0x20, 0x03,
 	0x28, 0x0c, 0x42, 0x14, 0x8a, 0xb5, 0x18, 0x08, 0x3f, 0x2c, 0x31, 0x33, 0x31, 0x30, 0x37, 0x32,
 	0x92, 0xb5, 0x18, 0x04, 0x34, 0x30, 0x39, 0x36, 0x52, 0x05, 0x62, 0x6c, 0x6f, 0x62, 0x73, 0x22,
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+	0x65, 0x75, 0x6d, 0x2e, 0x45, 0x6e, 0x67, 0x69, 0x6e, 0x65, 0x2e, 0x56, 0x31, 0xca, 0x02, 0x12,
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+	0x76, 0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
diff --git a/proto/engine/v1/execution_engine.proto b/proto/engine/v1/execution_engine.proto
index 6862c29c8..06a4b8021 100644
--- a/proto/engine/v1/execution_engine.proto
+++ b/proto/engine/v1/execution_engine.proto
@@ -230,11 +230,11 @@ message BlobsBundle {
 // BlindedBlobsBundle is retrieved through the builder-api from /eth/v1/builder/header/{slot}/{parent_hash}/{pubkey} after the Deneb hardfork.
 message BlindedBlobsBundle {
 	// The KZG commitments of the blobs.
-	repeated bytes kzg_commitments = 1 [(ethereum.eth.ext.ssz_size) = "?,48", (ethereum.eth.ext.ssz_max) = "4"];
+	repeated bytes kzg_commitments = 1 [(ethereum.eth.ext.ssz_size) = "?,48", (ethereum.eth.ext.ssz_max) = "max_blob_commitments.size"];
 	// The proofs of the blobs.
-	repeated bytes proofs = 2 [(ethereum.eth.ext.ssz_size) = "?,48", (ethereum.eth.ext.ssz_max) = "4"];
+	repeated bytes proofs = 2 [(ethereum.eth.ext.ssz_size) = "?,48", (ethereum.eth.ext.ssz_max) = "max_blob_commitments.size"];
 	// The blob roots.
-	repeated bytes blob_roots = 3 [(ethereum.eth.ext.ssz_size) = "?,32", (ethereum.eth.ext.ssz_max) = "4"];
+	repeated bytes blob_roots = 3 [(ethereum.eth.ext.ssz_size) = "?,32", (ethereum.eth.ext.ssz_max) = "max_blob_commitments.size"];
 }
 
 // Blob contains the data that is to be committed on chain.
diff --git a/proto/engine/v1/generated.ssz.go b/proto/engine/v1/generated.ssz.go
index 0bce6fcc9..578714d91 100644
--- a/proto/engine/v1/generated.ssz.go
+++ b/proto/engine/v1/generated.ssz.go
@@ -1,5 +1,5 @@
 // Code generated by fastssz. DO NOT EDIT.
-// Hash: 68f45ae4080f56abb8c89f1da5f89f449df5d58f2ff06318122ec28ce6a84751
+// Hash: d163294d035463f410495773be37e7997f5305be52b9d58b513197b7b37d5124
 package enginev1
 
 import (
@@ -2685,8 +2685,8 @@ func (b *BlindedBlobsBundle) MarshalSSZTo(buf []byte) (dst []byte, err error) {
 	offset += len(b.BlobRoots) * 32
 
 	// Field (0) 'KzgCommitments'
-	if size := len(b.KzgCommitments); size > 4 {
-		err = ssz.ErrListTooBigFn("--.KzgCommitments", size, 4)
+	if size := len(b.KzgCommitments); size > 4096 {
+		err = ssz.ErrListTooBigFn("--.KzgCommitments", size, 4096)
 		return
 	}
 	for ii := 0; ii < len(b.KzgCommitments); ii++ {
@@ -2698,8 +2698,8 @@ func (b *BlindedBlobsBundle) MarshalSSZTo(buf []byte) (dst []byte, err error) {
 	}
 
 	// Field (1) 'Proofs'
-	if size := len(b.Proofs); size > 4 {
-		err = ssz.ErrListTooBigFn("--.Proofs", size, 4)
+	if size := len(b.Proofs); size > 4096 {
+		err = ssz.ErrListTooBigFn("--.Proofs", size, 4096)
 		return
 	}
 	for ii := 0; ii < len(b.Proofs); ii++ {
@@ -2711,8 +2711,8 @@ func (b *BlindedBlobsBundle) MarshalSSZTo(buf []byte) (dst []byte, err error) {
 	}
 
 	// Field (2) 'BlobRoots'
-	if size := len(b.BlobRoots); size > 4 {
-		err = ssz.ErrListTooBigFn("--.BlobRoots", size, 4)
+	if size := len(b.BlobRoots); size > 4096 {
+		err = ssz.ErrListTooBigFn("--.BlobRoots", size, 4096)
 		return
 	}
 	for ii := 0; ii < len(b.BlobRoots); ii++ {
@@ -2759,7 +2759,7 @@ func (b *BlindedBlobsBundle) UnmarshalSSZ(buf []byte) error {
 	// Field (0) 'KzgCommitments'
 	{
 		buf = tail[o0:o1]
-		num, err := ssz.DivideInt2(len(buf), 48, 4)
+		num, err := ssz.DivideInt2(len(buf), 48, 4096)
 		if err != nil {
 			return err
 		}
@@ -2775,7 +2775,7 @@ 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, 4096)
 		if err != nil {
 			return err
 		}
@@ -2791,7 +2791,7 @@ 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, 4096)
 		if err != nil {
 			return err
 		}
@@ -2833,8 +2833,8 @@ func (b *BlindedBlobsBundle) HashTreeRootWith(hh *ssz.Hasher) (err error) {
 
 	// Field (0) 'KzgCommitments'
 	{
-		if size := len(b.KzgCommitments); size > 4 {
-			err = ssz.ErrListTooBigFn("--.KzgCommitments", size, 4)
+		if size := len(b.KzgCommitments); size > 4096 {
+			err = ssz.ErrListTooBigFn("--.KzgCommitments", size, 4096)
 			return
 		}
 		subIndx := hh.Index()
@@ -2848,16 +2848,16 @@ func (b *BlindedBlobsBundle) HashTreeRootWith(hh *ssz.Hasher) (err error) {
 
 		numItems := uint64(len(b.KzgCommitments))
 		if ssz.EnableVectorizedHTR {
-			hh.MerkleizeWithMixinVectorizedHTR(subIndx, numItems, 4)
+			hh.MerkleizeWithMixinVectorizedHTR(subIndx, numItems, 4096)
 		} else {
-			hh.MerkleizeWithMixin(subIndx, numItems, 4)
+			hh.MerkleizeWithMixin(subIndx, numItems, 4096)
 		}
 	}
 
 	// Field (1) 'Proofs'
 	{
-		if size := len(b.Proofs); size > 4 {
-			err = ssz.ErrListTooBigFn("--.Proofs", size, 4)
+		if size := len(b.Proofs); size > 4096 {
+			err = ssz.ErrListTooBigFn("--.Proofs", size, 4096)
 			return
 		}
 		subIndx := hh.Index()
@@ -2871,16 +2871,16 @@ func (b *BlindedBlobsBundle) HashTreeRootWith(hh *ssz.Hasher) (err error) {
 
 		numItems := uint64(len(b.Proofs))
 		if ssz.EnableVectorizedHTR {
-			hh.MerkleizeWithMixinVectorizedHTR(subIndx, numItems, 4)
+			hh.MerkleizeWithMixinVectorizedHTR(subIndx, numItems, 4096)
 		} else {
-			hh.MerkleizeWithMixin(subIndx, numItems, 4)
+			hh.MerkleizeWithMixin(subIndx, numItems, 4096)
 		}
 	}
 
 	// Field (2) 'BlobRoots'
 	{
-		if size := len(b.BlobRoots); size > 4 {
-			err = ssz.ErrListTooBigFn("--.BlobRoots", size, 4)
+		if size := len(b.BlobRoots); size > 4096 {
+			err = ssz.ErrListTooBigFn("--.BlobRoots", size, 4096)
 			return
 		}
 		subIndx := hh.Index()
@@ -2894,9 +2894,9 @@ func (b *BlindedBlobsBundle) HashTreeRootWith(hh *ssz.Hasher) (err error) {
 
 		numItems := uint64(len(b.BlobRoots))
 		if ssz.EnableVectorizedHTR {
-			hh.MerkleizeWithMixinVectorizedHTR(subIndx, numItems, 4)
+			hh.MerkleizeWithMixinVectorizedHTR(subIndx, numItems, 4096)
 		} else {
-			hh.MerkleizeWithMixin(subIndx, numItems, 4)
+			hh.MerkleizeWithMixin(subIndx, numItems, 4096)
 		}
 	}
 
diff --git a/proto/prysm/v1alpha1/beacon_block.pb.go b/proto/prysm/v1alpha1/beacon_block.pb.go
index 671218a99..4ba3ee1c4 100755
--- a/proto/prysm/v1alpha1/beacon_block.pb.go
+++ b/proto/prysm/v1alpha1/beacon_block.pb.go
@@ -3660,9 +3660,9 @@ type BuilderBidDeneb struct {
 	unknownFields protoimpl.UnknownFields
 
 	Header             *v1.ExecutionPayloadHeaderDeneb `protobuf:"bytes,1,opt,name=header,proto3" json:"header,omitempty"`
-	Value              []byte                          `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty" ssz-size:"32"`
-	Pubkey             []byte                          `protobuf:"bytes,3,opt,name=pubkey,proto3" json:"pubkey,omitempty" ssz-size:"48"`
-	BlindedBlobsBundle *v1.BlindedBlobsBundle          `protobuf:"bytes,4,opt,name=blinded_blobs_bundle,json=blindedBlobsBundle,proto3" json:"blinded_blobs_bundle,omitempty"`
+	BlindedBlobsBundle *v1.BlindedBlobsBundle          `protobuf:"bytes,2,opt,name=blinded_blobs_bundle,json=blindedBlobsBundle,proto3" json:"blinded_blobs_bundle,omitempty"`
+	Value              []byte                          `protobuf:"bytes,3,opt,name=value,proto3" json:"value,omitempty" ssz-size:"32"`
+	Pubkey             []byte                          `protobuf:"bytes,4,opt,name=pubkey,proto3" json:"pubkey,omitempty" ssz-size:"48"`
 }
 
 func (x *BuilderBidDeneb) Reset() {
@@ -3704,6 +3704,13 @@ func (x *BuilderBidDeneb) GetHeader() *v1.ExecutionPayloadHeaderDeneb {
 	return nil
 }
 
+func (x *BuilderBidDeneb) GetBlindedBlobsBundle() *v1.BlindedBlobsBundle {
+	if x != nil {
+		return x.BlindedBlobsBundle
+	}
+	return nil
+}
+
 func (x *BuilderBidDeneb) GetValue() []byte {
 	if x != nil {
 		return x.Value
@@ -3718,13 +3725,6 @@ func (x *BuilderBidDeneb) GetPubkey() []byte {
 	return nil
 }
 
-func (x *BuilderBidDeneb) GetBlindedBlobsBundle() *v1.BlindedBlobsBundle {
-	if x != nil {
-		return x.BlindedBlobsBundle
-	}
-	return nil
-}
-
 type SignedBuilderBidDeneb struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -4869,16 +4869,16 @@ var file_proto_prysm_v1alpha1_beacon_block_proto_rawDesc = []byte{
 	0x75, 0x6d, 0x2e, 0x65, 0x6e, 0x67, 0x69, 0x6e, 0x65, 0x2e, 0x76, 0x31, 0x2e, 0x45, 0x78, 0x65,
 	0x63, 0x75, 0x74, 0x69, 0x6f, 0x6e, 0x50, 0x61, 0x79, 0x6c, 0x6f, 0x61, 0x64, 0x48, 0x65, 0x61,
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 	0x28, 0x0b, 0x32, 0x26, 0x2e, 0x65, 0x74, 0x68, 0x65, 0x72, 0x65, 0x75, 0x6d, 0x2e, 0x65, 0x74,
diff --git a/proto/prysm/v1alpha1/beacon_block.proto b/proto/prysm/v1alpha1/beacon_block.proto
index e2abbfef4..8c8184807 100644
--- a/proto/prysm/v1alpha1/beacon_block.proto
+++ b/proto/prysm/v1alpha1/beacon_block.proto
@@ -767,9 +767,9 @@ message SignedBuilderBidCapella {
 
 message BuilderBidDeneb {
     ethereum.engine.v1.ExecutionPayloadHeaderDeneb header = 1;
-    bytes value = 2 [(ethereum.eth.ext.ssz_size) = "32"];
-    bytes pubkey = 3 [(ethereum.eth.ext.ssz_size) = "48"];
-    ethereum.engine.v1.BlindedBlobsBundle blinded_blobs_bundle = 4; // new in deneb
+    ethereum.engine.v1.BlindedBlobsBundle blinded_blobs_bundle = 2; // new in deneb
+    bytes value = 3 [(ethereum.eth.ext.ssz_size) = "32"];
+    bytes pubkey = 4 [(ethereum.eth.ext.ssz_size) = "48"];
 }
 
 message SignedBuilderBidDeneb {
diff --git a/proto/prysm/v1alpha1/generated.ssz.go b/proto/prysm/v1alpha1/generated.ssz.go
index 66893d57d..21579dcbb 100644
--- a/proto/prysm/v1alpha1/generated.ssz.go
+++ b/proto/prysm/v1alpha1/generated.ssz.go
@@ -1,5 +1,5 @@
 // Code generated by fastssz. DO NOT EDIT.
-// Hash: 2a9c193ab6b4d9257fe266b49ce98b5cfecc990e6757a8aabb9dd0931a797f1c
+// Hash: cddef0a13ca91be4f7ffa550163d8709c6f2f41b91d0894886169707feb934e8
 package eth
 
 import (
@@ -9187,33 +9187,33 @@ func (b *BuilderBidDeneb) MarshalSSZTo(buf []byte) (dst []byte, err error) {
 	}
 	offset += b.Header.SizeSSZ()
 
-	// Field (1) 'Value'
-	if size := len(b.Value); size != 32 {
-		err = ssz.ErrBytesLengthFn("--.Value", size, 32)
-		return
-	}
-	dst = append(dst, b.Value...)
-
-	// Field (2) 'Pubkey'
-	if size := len(b.Pubkey); size != 48 {
-		err = ssz.ErrBytesLengthFn("--.Pubkey", size, 48)
-		return
-	}
-	dst = append(dst, b.Pubkey...)
-
-	// Offset (3) 'BlindedBlobsBundle'
+	// Offset (1) 'BlindedBlobsBundle'
 	dst = ssz.WriteOffset(dst, offset)
 	if b.BlindedBlobsBundle == nil {
 		b.BlindedBlobsBundle = new(v1.BlindedBlobsBundle)
 	}
 	offset += b.BlindedBlobsBundle.SizeSSZ()
 
+	// Field (2) 'Value'
+	if size := len(b.Value); size != 32 {
+		err = ssz.ErrBytesLengthFn("--.Value", size, 32)
+		return
+	}
+	dst = append(dst, b.Value...)
+
+	// Field (3) 'Pubkey'
+	if size := len(b.Pubkey); size != 48 {
+		err = ssz.ErrBytesLengthFn("--.Pubkey", size, 48)
+		return
+	}
+	dst = append(dst, b.Pubkey...)
+
 	// Field (0) 'Header'
 	if dst, err = b.Header.MarshalSSZTo(dst); err != nil {
 		return
 	}
 
-	// Field (3) 'BlindedBlobsBundle'
+	// Field (1) 'BlindedBlobsBundle'
 	if dst, err = b.BlindedBlobsBundle.MarshalSSZTo(dst); err != nil {
 		return
 	}
@@ -9230,7 +9230,7 @@ func (b *BuilderBidDeneb) UnmarshalSSZ(buf []byte) error {
 	}
 
 	tail := buf
-	var o0, o3 uint64
+	var o0, o1 uint64
 
 	// Offset (0) 'Header'
 	if o0 = ssz.ReadOffset(buf[0:4]); o0 > size {
@@ -9241,26 +9241,26 @@ func (b *BuilderBidDeneb) UnmarshalSSZ(buf []byte) error {
 		return ssz.ErrInvalidVariableOffset
 	}
 
-	// Field (1) 'Value'
-	if cap(b.Value) == 0 {
-		b.Value = make([]byte, 0, len(buf[4:36]))
-	}
-	b.Value = append(b.Value, buf[4:36]...)
-
-	// Field (2) 'Pubkey'
-	if cap(b.Pubkey) == 0 {
-		b.Pubkey = make([]byte, 0, len(buf[36:84]))
-	}
-	b.Pubkey = append(b.Pubkey, buf[36:84]...)
-
-	// Offset (3) 'BlindedBlobsBundle'
-	if o3 = ssz.ReadOffset(buf[84:88]); o3 > size || o0 > o3 {
+	// Offset (1) 'BlindedBlobsBundle'
+	if o1 = ssz.ReadOffset(buf[4:8]); o1 > size || o0 > o1 {
 		return ssz.ErrOffset
 	}
 
+	// Field (2) 'Value'
+	if cap(b.Value) == 0 {
+		b.Value = make([]byte, 0, len(buf[8:40]))
+	}
+	b.Value = append(b.Value, buf[8:40]...)
+
+	// Field (3) 'Pubkey'
+	if cap(b.Pubkey) == 0 {
+		b.Pubkey = make([]byte, 0, len(buf[40:88]))
+	}
+	b.Pubkey = append(b.Pubkey, buf[40:88]...)
+
 	// Field (0) 'Header'
 	{
-		buf = tail[o0:o3]
+		buf = tail[o0:o1]
 		if b.Header == nil {
 			b.Header = new(v1.ExecutionPayloadHeaderDeneb)
 		}
@@ -9269,9 +9269,9 @@ func (b *BuilderBidDeneb) UnmarshalSSZ(buf []byte) error {
 		}
 	}
 
-	// Field (3) 'BlindedBlobsBundle'
+	// Field (1) 'BlindedBlobsBundle'
 	{
-		buf = tail[o3:]
+		buf = tail[o1:]
 		if b.BlindedBlobsBundle == nil {
 			b.BlindedBlobsBundle = new(v1.BlindedBlobsBundle)
 		}
@@ -9292,7 +9292,7 @@ func (b *BuilderBidDeneb) SizeSSZ() (size int) {
 	}
 	size += b.Header.SizeSSZ()
 
-	// Field (3) 'BlindedBlobsBundle'
+	// Field (1) 'BlindedBlobsBundle'
 	if b.BlindedBlobsBundle == nil {
 		b.BlindedBlobsBundle = new(v1.BlindedBlobsBundle)
 	}
@@ -9315,25 +9315,25 @@ func (b *BuilderBidDeneb) HashTreeRootWith(hh *ssz.Hasher) (err error) {
 		return
 	}
 
-	// Field (1) 'Value'
+	// Field (1) 'BlindedBlobsBundle'
+	if err = b.BlindedBlobsBundle.HashTreeRootWith(hh); err != nil {
+		return
+	}
+
+	// Field (2) 'Value'
 	if size := len(b.Value); size != 32 {
 		err = ssz.ErrBytesLengthFn("--.Value", size, 32)
 		return
 	}
 	hh.PutBytes(b.Value)
 
-	// Field (2) 'Pubkey'
+	// Field (3) 'Pubkey'
 	if size := len(b.Pubkey); size != 48 {
 		err = ssz.ErrBytesLengthFn("--.Pubkey", size, 48)
 		return
 	}
 	hh.PutBytes(b.Pubkey)
 
-	// Field (3) 'BlindedBlobsBundle'
-	if err = b.BlindedBlobsBundle.HashTreeRootWith(hh); err != nil {
-		return
-	}
-
 	if ssz.EnableVectorizedHTR {
 		hh.MerkleizeVectorizedHTR(indx)
 	} else {