diff --git a/remote/ethbackend.proto b/remote/ethbackend.proto
index 8208c12..1f40d86 100644
--- a/remote/ethbackend.proto
+++ b/remote/ethbackend.proto
@@ -31,6 +31,9 @@ service ETHBACKEND {
 
   rpc EngineGetPayloadBodiesByRangeV1(EngineGetPayloadBodiesByRangeV1Request) returns (EngineGetPayloadBodiesV1Response);
 
+  // Fetch the blobs bundle using its ID.
+  rpc EngineGetBlobsBundleV1(EngineGetBlobsBundleRequest) returns (types.BlobsBundleV1);
+
   // End of Engine API requests
   // ------------------------------------------------------------------------
 
@@ -93,6 +96,10 @@ message EngineGetPayloadRequest {
   uint64 payloadId = 1;
 }
 
+message EngineGetBlobsBundleRequest {
+  uint64 payloadId = 1;
+}
+
 enum EngineStatus {
   VALID = 0;
   INVALID = 1;
diff --git a/types/types.proto b/types/types.proto
index 08e91fb..2c8b80c 100644
--- a/types/types.proto
+++ b/types/types.proto
@@ -59,7 +59,7 @@ message VersionReply {
 // Engine API types
 // See https://github.com/ethereum/execution-apis/blob/main/src/engine/specification.md
 message ExecutionPayload {
-  uint32 version = 1; // v1 - no withdrawals, v2 - with withdrawals
+  uint32 version = 1; // v1 - no withdrawals, v2 - with withdrawals, v3 - with excess data gas
   H256 parentHash = 2;
   H160 coinbase = 3;
   H256 stateRoot = 4;
@@ -75,6 +75,7 @@ message ExecutionPayload {
   H256 blockHash = 14;
   repeated bytes transactions = 15;
   repeated Withdrawal withdrawals = 16;
+  H256 excessDataGas = 17;
 }
 
 message Withdrawal {
@@ -83,6 +84,15 @@ message Withdrawal {
   H160 address = 3;
   uint64 amount = 4;
 }
+
+message BlobsBundleV1 {
+  H256 blockHash = 1;
+  // TODO(eip-4844): define a protobuf message for type KZGCommitment
+  repeated bytes kzgs = 2;
+  // TODO(eip-4844): define a protobuf message for type Blob
+  repeated bytes blobs = 3;
+}
+
 // End of Engine API types
 // ------------------------------------------------------------------------