diff --git a/fluffy/fluffy.nim b/fluffy/fluffy.nim
index 944450763..f808c2691 100644
--- a/fluffy/fluffy.nim
+++ b/fluffy/fluffy.nim
@@ -137,7 +137,7 @@ proc run(config: PortalConf) {.raises: [CatchableError].} =
     d = newProtocol(
       netkey,
       extIp,
-      none(Port),
+      Opt.none(Port),
       extUdpPort,
       # Note: The addition of default clientInfo to the ENR is a temporary
       # measure to easily identify & debug the clients used in the testnet.
@@ -147,9 +147,9 @@ proc run(config: PortalConf) {.raises: [CatchableError].} =
       previousRecord =
         # TODO: discv5/enr code still uses Option, to be changed.
         if previousEnr.isSome():
-          some(previousEnr.get())
+          Opt.some(previousEnr.get())
         else:
-          none(enr.Record)
+          Opt.none(enr.Record)
       ,
       bindIp = bindIp,
       bindPort = udpPort,
diff --git a/fluffy/tests/test_helpers.nim b/fluffy/tests/test_helpers.nim
index 4a170066d..f1d6dd086 100644
--- a/fluffy/tests/test_helpers.nim
+++ b/fluffy/tests/test_helpers.nim
@@ -24,16 +24,16 @@ proc initDiscoveryNode*(
     address: Address,
     bootstrapRecords: openArray[Record] = [],
     localEnrFields: openArray[(string, seq[byte])] = [],
-    previousRecord = none[enr.Record](),
+    previousRecord = Opt.none(enr.Record),
 ): discv5_protocol.Protocol {.raises: [CatchableError].} =
   # set bucketIpLimit to allow bucket split
   let config = DiscoveryConfig.init(1000, 24, 5)
 
   result = newProtocol(
     privKey,
-    some(address.ip),
-    some(address.port),
-    some(address.port),
+    Opt.some(address.ip),
+    Opt.some(address.port),
+    Opt.some(address.port),
     bindPort = address.port,
     bootstrapRecords = bootstrapRecords,
     localEnrFields = localEnrFields,
diff --git a/fluffy/tools/beacon_lc_bridge/beacon_lc_bridge.nim b/fluffy/tools/beacon_lc_bridge/beacon_lc_bridge.nim
index 2e5f72fff..718f7a47d 100644
--- a/fluffy/tools/beacon_lc_bridge/beacon_lc_bridge.nim
+++ b/fluffy/tools/beacon_lc_bridge/beacon_lc_bridge.nim
@@ -264,7 +264,7 @@ proc run(config: BeaconBridgeConf) {.raises: [CatchableError].} =
     portalRpcClient = newRpcHttpClient()
 
     optimisticHandler = proc(
-        signedBlock: ForkedMsgTrustedSignedBeaconBlock
+        signedBlock: ForkedSignedBeaconBlock
     ): Future[void] {.async: (raises: [CancelledError]).} =
       # TODO: Should not be gossiping optimistic blocks, but instead store them
       # in a cache and only gossip them after they are confirmed due to an LC
@@ -512,7 +512,6 @@ proc run(config: BeaconBridgeConf) {.raises: [CatchableError].} =
     withForkyHeader(optimisticHeader):
       when lcDataFork > LightClientDataFork.None:
         info "New LC optimistic header", optimistic_header = shortLog(forkyHeader)
-        optimisticProcessor.setOptimisticHeader(forkyHeader.beacon)
 
   lightClient.onFinalizedHeader = onFinalizedHeader
   lightClient.onOptimisticHeader = onOptimisticHeader
diff --git a/fluffy/tools/portalcli.nim b/fluffy/tools/portalcli.nim
index 9c13d5159..98abee2c6 100644
--- a/fluffy/tools/portalcli.nim
+++ b/fluffy/tools/portalcli.nim
@@ -231,7 +231,7 @@ proc run(config: PortalCliConf) =
   let d = newProtocol(
     config.networkKey,
     extIp,
-    none(Port),
+    Opt.none(Port),
     extUdpPort,
     bootstrapRecords = bootstrapRecords,
     bindIp = bindIp,
diff --git a/fluffy/tools/utp_testing/utp_test_app.nim b/fluffy/tools/utp_testing/utp_test_app.nim
index 6ec55905b..783f30be2 100644
--- a/fluffy/tools/utp_testing/utp_test_app.nim
+++ b/fluffy/tools/utp_testing/utp_test_app.nim
@@ -12,7 +12,7 @@ import
   chronicles,
   confutils,
   confutils/std/net as confNet,
-  stew/[byteutils, endians2],
+  stew/byteutils,
   json_rpc/servers/httpserver,
   eth/p2p/discoveryv5/protocol,
   eth/p2p/discoveryv5/enr,
@@ -54,7 +54,7 @@ proc installUtpHandlers(
     d: protocol.Protocol,
     s: UtpDiscv5Protocol,
     t: ref Table[SKey, UtpSocket[NodeAddress]],
-) {.raises: [CatchableError].} =
+) {.raises: [].} =
   srv.rpc("utp_connect") do(r: enr.Record) -> SKey:
     let nodeRes = newNode(r)
 
@@ -148,9 +148,9 @@ when isMainModule:
 
   let d = newProtocol(
     key,
-    some(discAddress),
-    none(Port),
-    some(conf.udpPort),
+    Opt.some(discAddress),
+    Opt.none(Port),
+    Opt.some(conf.udpPort),
     bootstrapRecords = @[],
     bindIp = discAddress,
     bindPort = conf.udpPort,
diff --git a/nimbus/beacon/api_handler/api_newpayload.nim b/nimbus/beacon/api_handler/api_newpayload.nim
index 18579b76b..b52c998c9 100644
--- a/nimbus/beacon/api_handler/api_newpayload.nim
+++ b/nimbus/beacon/api_handler/api_newpayload.nim
@@ -83,9 +83,9 @@ template validatePayload(apiVersion, version, payload) =
         "excessBlobGas is expected from execution payload")
 
   if apiVersion >= Version.V4 or version >= Version.V4:
-    if payload.depositReceipts.isNone:
+    if payload.depositRequests.isNone:
       raise invalidParams("newPayload" & $apiVersion &
-        "depositReceipts is expected from execution payload")
+        "depositRequests is expected from execution payload")
     if payload.exits.isNone:
       raise invalidParams("newPayload" & $apiVersion &
         "exits is expected from execution payload")
diff --git a/nimbus/core/eip4844.nim b/nimbus/core/eip4844.nim
index 774b214ba..c5c67849b 100644
--- a/nimbus/core/eip4844.nim
+++ b/nimbus/core/eip4844.nim
@@ -10,6 +10,7 @@
 
 import
   std/[os, strutils],
+  stew/arrayops,
   nimcrypto/sha2,
   kzg4844/kzg_ex as kzg,
   results,
@@ -39,8 +40,8 @@ const
 
 
 # kzgToVersionedHash implements kzg_to_versioned_hash from EIP-4844
-proc kzgToVersionedHash*(kzg: kzg.KZGCommitment): VersionedHash =
-  result = sha256.digest(kzg.bytes)
+proc kzgToVersionedHash*(kzg: kzg.KzgCommitment): VersionedHash =
+  result = sha256.digest(kzg)
   result.data[0] = VERSIONED_HASH_VERSION_KZG
 
 # pointEvaluation implements point_evaluation_precompile from EIP-4844
@@ -54,20 +55,14 @@ proc pointEvaluation*(input: openArray[byte]): Result[void, string] =
   if input.len != PrecompileInputLength:
     return err("invalid input length")
 
-  var
-    versionedHash: KzgBytes32
-    z: KzgBytes32
-    y: KzgBytes32
-    commitment: KzgBytes48
-    kzgProof: KzgBytes48
+  let
+    versionedHash = KzgBytes32.initCopyFrom(input.toOpenArray(0, 31))
+    z =  KzgBytes32.initCopyFrom(input.toOpenArray(32, 63))
+    y =  KzgBytes32.initCopyFrom(input.toOpenArray(64, 95))
+    commitment =  KzgBytes48.initCopyFrom(input.toOpenArray(96, 143))
+    kzgProof =  KzgBytes48.initCopyFrom(input.toOpenArray(144, 191))
 
-  versionedHash.bytes[0..<32] = input[0..<32]
-  z.bytes[0..<32] = input[32..<64]
-  y.bytes[0..<32] = input[64..<96]
-  commitment.bytes[0..<48] = input[96..<144]
-  kzgProof.bytes[0..<48]   = input[144..<192]
-
-  if kzgToVersionedHash(commitment).data != versionedHash.bytes:
+  if kzgToVersionedHash(commitment).data != versionedHash:
     return err("versionedHash should equal to kzgToVersionedHash(commitment)")
 
   # Verify KZG proof
@@ -183,14 +178,13 @@ proc validateBlobTransactionWrapper*(tx: PooledTransaction):
   if not goodFormatted:
     return err("tx wrapper is ill formatted")
 
-  let commitments = tx.networkPayload.commitments.mapIt(
-                      kzg.KzgCommitment(bytes: it))
+  let commitments = tx.networkPayload.commitments
 
   # Verify that commitments match the blobs by checking the KZG proof
   let res = kzg.verifyBlobKzgProofBatch(
-              tx.networkPayload.blobs.mapIt(kzg.KzgBlob(bytes: it)),
+              tx.networkPayload.blobs,
               commitments,
-              tx.networkPayload.proofs.mapIt(kzg.KzgProof(bytes: it)))
+              tx.networkPayload.proofs)
 
   if res.isErr:
     return err(res.error)
diff --git a/nimbus_verified_proxy/nimbus_verified_proxy.nim b/nimbus_verified_proxy/nimbus_verified_proxy.nim
index 7bc90cb9e..d46ebfd54 100644
--- a/nimbus_verified_proxy/nimbus_verified_proxy.nim
+++ b/nimbus_verified_proxy/nimbus_verified_proxy.nim
@@ -46,7 +46,6 @@ func getConfiguredChainId(networkMetadata: Eth2NetworkMetadata): Quantity =
       chainId =
         case net
         of mainnet: 1.Quantity
-        of goerli: 5.Quantity
         of sepolia: 11155111.Quantity
         of holesky: 17000.Quantity
     return chainId
@@ -130,7 +129,7 @@ proc run*(
     verifiedProxy = VerifiedRpcProxy.new(rpcProxy, blockCache, chainId)
 
     optimisticHandler = proc(
-        signedBlock: ForkedMsgTrustedSignedBeaconBlock
+        signedBlock: ForkedSignedBeaconBlock
     ): Future[void] {.async: (raises: [CancelledError]).} =
       notice "New LC optimistic block",
         opt = signedBlock.toBlockId(), wallSlot = getBeaconTime().slotOrZero
@@ -214,7 +213,6 @@ proc run*(
     withForkyHeader(optimisticHeader):
       when lcDataFork > LightClientDataFork.None:
         info "New LC optimistic header", optimistic_header = shortLog(forkyHeader)
-        optimisticProcessor.setOptimisticHeader(forkyHeader.beacon)
         if headerCallback != nil:
           try:
             headerCallback(cstring(Json.encode(forkyHeader)), 1)
diff --git a/vendor/nim-eth b/vendor/nim-eth
index f169068df..26212c881 160000
--- a/vendor/nim-eth
+++ b/vendor/nim-eth
@@ -1 +1 @@
-Subproject commit f169068df6c11a2aeba27584c60e354e19c42e94
+Subproject commit 26212c881b464ed64cac20442fb45144d3ecd3b3
diff --git a/vendor/nim-kzg4844 b/vendor/nim-kzg4844
index 2f5cee7be..f12616d06 160000
--- a/vendor/nim-kzg4844
+++ b/vendor/nim-kzg4844
@@ -1 +1 @@
-Subproject commit 2f5cee7bea0d62e2b502ff668f752bda7f3eb0c4
+Subproject commit f12616d0675d9f6346141ca95f0840ab227eb213
diff --git a/vendor/nim-web3 b/vendor/nim-web3
index b705f8164..fc226d451 160000
--- a/vendor/nim-web3
+++ b/vendor/nim-web3
@@ -1 +1 @@
-Subproject commit b705f816439f0068ece8c234336bc7093222d00f
+Subproject commit fc226d4511199aa57a3fcd5cc44695c6b365a6bf
diff --git a/vendor/nimbus-eth2 b/vendor/nimbus-eth2
index c5326619a..7a8c1d818 160000
--- a/vendor/nimbus-eth2
+++ b/vendor/nimbus-eth2
@@ -1 +1 @@
-Subproject commit c5326619a4d094db6f9e36c18992e0fa62fdc3d1
+Subproject commit 7a8c1d818a835312cc661e941154556ace0d70b4