diff --git a/web3/engine_api.nim b/web3/engine_api.nim
index 2242a05..422beed 100644
--- a/web3/engine_api.nim
+++ b/web3/engine_api.nim
@@ -26,8 +26,14 @@ createRpcSigsFromNim(RpcClient):
 
   proc engine_newPayloadV1(payload: ExecutionPayloadV1): PayloadStatusV1
   proc engine_newPayloadV2(payload: ExecutionPayloadV2): PayloadStatusV1
-  proc engine_newPayloadV3(payload: ExecutionPayloadV3, expectedBlobVersionedHashes: seq[VersionedHash], parentBeaconBlockRoot: Hash32): PayloadStatusV1
-  proc engine_newPayloadV4(payload: ExecutionPayloadV3, expectedBlobVersionedHashes: seq[VersionedHash], parentBeaconBlockRoot: Hash32, executionRequests: array[3, seq[byte]]): PayloadStatusV1
+  proc engine_newPayloadV3(payload: ExecutionPayloadV3,
+    expectedBlobVersionedHashes: seq[VersionedHash],
+    parentBeaconBlockRoot: Hash32): PayloadStatusV1
+  proc engine_newPayloadV4(payload: ExecutionPayloadV3,
+    expectedBlobVersionedHashes: seq[VersionedHash],
+    parentBeaconBlockRoot: Hash32,
+    executionRequests: array[3, seq[byte]],
+    targetBlobsPerBlock: Opt[Quantity]): PayloadStatusV1
   proc engine_forkchoiceUpdatedV1(forkchoiceState: ForkchoiceStateV1, payloadAttributes: Opt[PayloadAttributesV1]): ForkchoiceUpdatedResponse
   proc engine_forkchoiceUpdatedV2(forkchoiceState: ForkchoiceStateV1, payloadAttributes: Opt[PayloadAttributesV2]): ForkchoiceUpdatedResponse
   proc engine_forkchoiceUpdatedV3(forkchoiceState: ForkchoiceStateV1, payloadAttributes: Opt[PayloadAttributesV3]): ForkchoiceUpdatedResponse