diff --git a/packages/api/test/unit/beacon/oapiSpec.test.ts b/packages/api/test/unit/beacon/oapiSpec.test.ts
index e5d473ab6a5..00f1a3d8731 100644
--- a/packages/api/test/unit/beacon/oapiSpec.test.ts
+++ b/packages/api/test/unit/beacon/oapiSpec.test.ts
@@ -86,6 +86,11 @@ const ignoredTopics = [
    topic block_gossip not implemented
    */
   "block_gossip",
+
+  // Modified in electra to include version
+  // should be removed from the ignore list after spec update
+  "attestation",
+  "attester_slashing",
 ];
 
 // eventstream types are defined as comments in the description of "examples".
diff --git a/packages/beacon-node/src/api/impl/config/constants.ts b/packages/beacon-node/src/api/impl/config/constants.ts
index b5f81015758..78262ce1523 100644
--- a/packages/beacon-node/src/api/impl/config/constants.ts
+++ b/packages/beacon-node/src/api/impl/config/constants.ts
@@ -38,7 +38,7 @@ import {
   VERSIONED_HASH_VERSION_KZG,
   COMPOUNDING_WITHDRAWAL_PREFIX,
   DOMAIN_CONSOLIDATION,
-  UNSET_DEPOSIT_RECEIPTS_START_INDEX,
+  UNSET_DEPOSIT_REQUESTS_START_INDEX,
   FULL_EXIT_REQUEST_AMOUNT,
 } from "@lodestar/params";
 
@@ -108,6 +108,6 @@ export const specConstants = {
   VERSIONED_HASH_VERSION_KZG,
 
   // electra
-  UNSET_DEPOSIT_RECEIPTS_START_INDEX,
+  UNSET_DEPOSIT_REQUESTS_START_INDEX,
   FULL_EXIT_REQUEST_AMOUNT,
 };
diff --git a/packages/beacon-node/src/chain/blocks/types.ts b/packages/beacon-node/src/chain/blocks/types.ts
index 5eb5eebc784..80c94e2d6fd 100644
--- a/packages/beacon-node/src/chain/blocks/types.ts
+++ b/packages/beacon-node/src/chain/blocks/types.ts
@@ -1,7 +1,7 @@
 import {CachedBeaconStateAllForks, computeEpochAtSlot} from "@lodestar/state-transition";
 import {MaybeValidExecutionStatus, DataAvailabilityStatus} from "@lodestar/fork-choice";
 import {deneb, Slot, RootHex, SignedBeaconBlock} from "@lodestar/types";
-import {ForkSeq, ForkName} from "@lodestar/params";
+import {ForkSeq, ForkName, ForkBlobs} from "@lodestar/params";
 import {ChainForkConfig} from "@lodestar/config";
 
 export enum BlockInputType {
@@ -36,7 +36,7 @@ export enum GossipedInputType {
 
 type BlobsCacheMap = Map<number, {blobSidecar: deneb.BlobSidecar; blobBytes: Uint8Array | null}>;
 
-type ForkBlobsInfo = {fork: ForkName.deneb | ForkName.electra};
+type ForkBlobsInfo = {fork: ForkBlobs};
 type BlobsData = {blobs: deneb.BlobSidecars; blobsBytes: (Uint8Array | null)[]; blobsSource: BlobsSource};
 export type BlockInputDataBlobs = ForkBlobsInfo & BlobsData;
 export type BlockInputData = BlockInputDataBlobs;
diff --git a/packages/beacon-node/src/chain/opPools/aggregatedAttestationPool.ts b/packages/beacon-node/src/chain/opPools/aggregatedAttestationPool.ts
index acd1dafe1ea..6751329a9c1 100644
--- a/packages/beacon-node/src/chain/opPools/aggregatedAttestationPool.ts
+++ b/packages/beacon-node/src/chain/opPools/aggregatedAttestationPool.ts
@@ -1,5 +1,4 @@
-import {aggregateSignatures} from "@chainsafe/blst";
-import {Signature} from "@chainsafe/bls/types";
+import {aggregateSignatures, Signature} from "@chainsafe/blst";
 import {BitArray, toHexString} from "@chainsafe/ssz";
 import {
   ForkName,
diff --git a/packages/beacon-node/src/chain/opPools/opPool.ts b/packages/beacon-node/src/chain/opPools/opPool.ts
index 8de08b7b419..bc7ae31d949 100644
--- a/packages/beacon-node/src/chain/opPools/opPool.ts
+++ b/packages/beacon-node/src/chain/opPools/opPool.ts
@@ -209,7 +209,7 @@ export class OpPool {
 
     const endAttesterSlashings = stepsMetrics?.startTimer();
     const attesterSlashings: AttesterSlashing[] = [];
-    const maxAttesterSlashing = stateFork >= ForkSeq.electra ? MAX_ATTESTER_SLASHINGS_ELECTRA : MAX_ATTESTER_SLASHINGS;
+    const maxAttesterSlashings = stateFork >= ForkSeq.electra ? MAX_ATTESTER_SLASHINGS_ELECTRA : MAX_ATTESTER_SLASHINGS;
     attesterSlashing: for (const attesterSlashing of this.attesterSlashings.values()) {
       /** Indices slashable in this attester slashing */
       const slashableIndices = new Set<ValidatorIndex>();
@@ -224,7 +224,7 @@ export class OpPool {
         if (isSlashableAtEpoch(validator, stateEpoch)) {
           slashableIndices.add(index);
         }
-        if (attesterSlashings.length >= maxAttesterSlashing) {
+        if (attesterSlashings.length >= maxAttesterSlashings) {
           break attesterSlashing;
         }
       }
diff --git a/packages/beacon-node/src/chain/stateCache/types.ts b/packages/beacon-node/src/chain/stateCache/types.ts
index ad93def481e..1e8d6bd1bd6 100644
--- a/packages/beacon-node/src/chain/stateCache/types.ts
+++ b/packages/beacon-node/src/chain/stateCache/types.ts
@@ -33,7 +33,8 @@ export interface BlockStateCache {
   prune(headStateRootHex: RootHex): void;
   deleteAllBeforeEpoch(finalizedEpoch: Epoch): void;
   dumpSummary(): routes.lodestar.StateCacheItem[];
-  getStates(): IterableIterator<CachedBeaconStateAllForks>; // Expose beacon states stored in cache. Use with caution
+  /** Expose beacon states stored in cache. Use with caution */
+  getStates(): IterableIterator<CachedBeaconStateAllForks>;
 }
 
 /**
@@ -75,7 +76,8 @@ export interface CheckpointStateCache {
   processState(blockRootHex: RootHex, state: CachedBeaconStateAllForks): Promise<number>;
   clear(): void;
   dumpSummary(): routes.lodestar.StateCacheItem[];
-  getStates(): IterableIterator<CachedBeaconStateAllForks>; // Expose beacon states stored in cache. Use with caution
+  /** Expose beacon states stored in cache. Use with caution */
+  getStates(): IterableIterator<CachedBeaconStateAllForks>;
 }
 
 export enum CacheItemType {
diff --git a/packages/beacon-node/src/chain/validation/signatureSets/aggregateAndProof.ts b/packages/beacon-node/src/chain/validation/signatureSets/aggregateAndProof.ts
index 2945b4d445d..31d93181859 100644
--- a/packages/beacon-node/src/chain/validation/signatureSets/aggregateAndProof.ts
+++ b/packages/beacon-node/src/chain/validation/signatureSets/aggregateAndProof.ts
@@ -1,4 +1,4 @@
-import type {PublicKey} from "@chainsafe/bls/types";
+import {PublicKey} from "@chainsafe/blst";
 import {DOMAIN_AGGREGATE_AND_PROOF, ForkSeq} from "@lodestar/params";
 import {ssz, SignedAggregateAndProof} from "@lodestar/types";
 import {Epoch} from "@lodestar/types";
diff --git a/packages/beacon-node/src/execution/engine/interface.ts b/packages/beacon-node/src/execution/engine/interface.ts
index a835fa76f50..5226a46ac72 100644
--- a/packages/beacon-node/src/execution/engine/interface.ts
+++ b/packages/beacon-node/src/execution/engine/interface.ts
@@ -177,6 +177,4 @@ export interface IExecutionEngine {
   getPayloadBodiesByHash(fork: ForkName, blockHash: DATA[]): Promise<(ExecutionPayloadBody | null)[]>;
 
   getPayloadBodiesByRange(fork: ForkName, start: number, count: number): Promise<(ExecutionPayloadBody | null)[]>;
-
-  getState(): ExecutionEngineState;
 }
diff --git a/packages/beacon-node/test/perf/chain/stateCache/updateUnfinalizedPubkeys.test.ts b/packages/beacon-node/test/perf/chain/stateCache/updateUnfinalizedPubkeys.test.ts
index b8f5c30a70e..46659ab3d28 100644
--- a/packages/beacon-node/test/perf/chain/stateCache/updateUnfinalizedPubkeys.test.ts
+++ b/packages/beacon-node/test/perf/chain/stateCache/updateUnfinalizedPubkeys.test.ts
@@ -2,8 +2,7 @@ import {itBench, setBenchOpts} from "@dapplion/benchmark";
 import {Map} from "immutable";
 import {toBufferBE} from "bigint-buffer";
 import {digest} from "@chainsafe/as-sha256";
-import type {SecretKey} from "@chainsafe/bls/types";
-import bls from "@chainsafe/bls";
+import {SecretKey} from "@chainsafe/blst";
 import {ssz} from "@lodestar/types";
 import {type CachedBeaconStateAllForks, PubkeyIndexMap} from "@lodestar/state-transition";
 import {bytesToBigInt, intToBytes} from "@lodestar/utils";
@@ -106,6 +105,7 @@ describe("updateUnfinalizedPubkeys perf tests", function () {
 
   function generatePrivateKey(index: number): SecretKey {
     const secretKeyBytes = toBufferBE(bytesToBigInt(digest(intToBytes(index, 32))) % BigInt("38581184513"), 32);
-    return bls.SecretKey.fromBytes(secretKeyBytes);
+    const secret: SecretKey = SecretKey.fromBytes(secretKeyBytes);
+    return secret;
   }
 });
diff --git a/packages/beacon-node/test/sim/electra-interop.test.ts b/packages/beacon-node/test/sim/electra-interop.test.ts
index 2dfa5ee0f77..02fc99f9cfa 100644
--- a/packages/beacon-node/test/sim/electra-interop.test.ts
+++ b/packages/beacon-node/test/sim/electra-interop.test.ts
@@ -3,7 +3,7 @@ import assert from "node:assert";
 import {describe, it, vi, afterAll, afterEach} from "vitest";
 
 import {LogLevel, sleep} from "@lodestar/utils";
-import {ForkName, SLOTS_PER_EPOCH, UNSET_DEPOSIT_RECEIPTS_START_INDEX} from "@lodestar/params";
+import {ForkName, SLOTS_PER_EPOCH, UNSET_DEPOSIT_REQUESTS_START_INDEX} from "@lodestar/params";
 import {electra, Epoch, Slot} from "@lodestar/types";
 import {ValidatorProposerConfig} from "@lodestar/validator";
 
@@ -431,7 +431,7 @@ describe("executionEngine / ExecutionEngineHttp", function () {
       throw Error("Historical validator length for epoch 1 or 2 is not dropped properly");
     }
 
-    if (headState.depositRequestsStartIndex === UNSET_DEPOSIT_RECEIPTS_START_INDEX) {
+    if (headState.depositRequestsStartIndex === UNSET_DEPOSIT_REQUESTS_START_INDEX) {
       throw Error("state.depositRequestsStartIndex is not set upon processing new deposit receipt");
     }
 
diff --git a/packages/beacon-node/test/spec/presets/fork_choice.test.ts b/packages/beacon-node/test/spec/presets/fork_choice.test.ts
index 01adcc77500..7cb6e3c3d69 100644
--- a/packages/beacon-node/test/spec/presets/fork_choice.test.ts
+++ b/packages/beacon-node/test/spec/presets/fork_choice.test.ts
@@ -4,7 +4,17 @@ import {toHexString} from "@chainsafe/ssz";
 import {BeaconStateAllForks, isExecutionStateType, signedBlockToSignedHeader} from "@lodestar/state-transition";
 import {InputType} from "@lodestar/spec-test-util";
 import {CheckpointWithHex, ForkChoice} from "@lodestar/fork-choice";
-import {phase0, bellatrix, ssz, RootHex, deneb, BeaconBlock, SignedBeaconBlock} from "@lodestar/types";
+import {
+  bellatrix,
+  ssz,
+  RootHex,
+  deneb,
+  BeaconBlock,
+  SignedBeaconBlock,
+  sszTypesFor,
+  Attestation,
+  AttesterSlashing,
+} from "@lodestar/types";
 import {bnToNum, fromHex} from "@lodestar/utils";
 import {createBeaconConfig} from "@lodestar/config";
 import {ACTIVE_PRESET, ForkSeq, isForkBlobs, ForkName} from "@lodestar/params";
@@ -136,7 +146,7 @@ const forkChoiceTest =
               const attestation = testcase.attestations.get(step.attestation);
               if (!attestation) throw Error(`No attestation ${step.attestation}`);
               const headState = chain.getHeadState();
-              const attDataRootHex = toHexString(ssz.phase0.AttestationData.hashTreeRoot(attestation.data));
+              const attDataRootHex = toHexString(sszTypesFor(fork).AttestationData.hashTreeRoot(attestation.data));
               chain.forkChoice.onAttestation(
                 headState.epochCtx.getIndexedAttestation(ForkSeq[fork], attestation),
                 attDataRootHex
@@ -343,16 +353,16 @@ const forkChoiceTest =
           [BLOCK_FILE_NAME]: ssz[fork].SignedBeaconBlock,
           [BLOBS_FILE_NAME]: ssz.deneb.Blobs,
           [POW_BLOCK_FILE_NAME]: ssz.bellatrix.PowBlock,
-          [ATTESTATION_FILE_NAME]: ssz.phase0.Attestation,
-          [ATTESTER_SLASHING_FILE_NAME]: ssz.phase0.AttesterSlashing,
+          [ATTESTATION_FILE_NAME]: sszTypesFor(fork).Attestation,
+          [ATTESTER_SLASHING_FILE_NAME]: sszTypesFor(fork).AttesterSlashing,
         },
         mapToTestCase: (t: Record<string, any>) => {
           // t has input file name as key
           const blocks = new Map<string, SignedBeaconBlock>();
           const blobs = new Map<string, deneb.Blobs>();
           const powBlocks = new Map<string, bellatrix.PowBlock>();
-          const attestations = new Map<string, phase0.Attestation>();
-          const attesterSlashings = new Map<string, phase0.AttesterSlashing>();
+          const attestations = new Map<string, Attestation>();
+          const attesterSlashings = new Map<string, AttesterSlashing>();
           for (const key in t) {
             const blockMatch = key.match(BLOCK_FILE_NAME);
             if (blockMatch) {
@@ -495,8 +505,8 @@ type ForkChoiceTestCase = {
   blocks: Map<string, SignedBeaconBlock>;
   blobs: Map<string, deneb.Blobs>;
   powBlocks: Map<string, bellatrix.PowBlock>;
-  attestations: Map<string, phase0.Attestation>;
-  attesterSlashings: Map<string, phase0.AttesterSlashing>;
+  attestations: Map<string, Attestation>;
+  attesterSlashings: Map<string, AttesterSlashing>;
 };
 
 function isTick(step: Step): step is OnTick {
diff --git a/packages/beacon-node/test/spec/presets/operations.test.ts b/packages/beacon-node/test/spec/presets/operations.test.ts
index 24f51b05c4f..c978cac3c8a 100644
--- a/packages/beacon-node/test/spec/presets/operations.test.ts
+++ b/packages/beacon-node/test/spec/presets/operations.test.ts
@@ -135,8 +135,8 @@ const operations: TestRunnerFn<OperationsTestCase, BeaconStateAllForks> = (fork,
       sszTypes: {
         pre: ssz[fork].BeaconState,
         post: ssz[fork].BeaconState,
-        attestation: ssz.phase0.Attestation,
-        attester_slashing: ssz.phase0.AttesterSlashing,
+        attestation: sszTypesFor(fork).Attestation,
+        attester_slashing: sszTypesFor(fork).AttesterSlashing,
         block: ssz[fork].BeaconBlock,
         body: ssz[fork].BeaconBlockBody,
         deposit: ssz.phase0.Deposit,
diff --git a/packages/beacon-node/test/unit/chain/opPools/aggregatedAttestationPool.test.ts b/packages/beacon-node/test/unit/chain/opPools/aggregatedAttestationPool.test.ts
index 57b5d6fad00..c9c128e5485 100644
--- a/packages/beacon-node/test/unit/chain/opPools/aggregatedAttestationPool.test.ts
+++ b/packages/beacon-node/test/unit/chain/opPools/aggregatedAttestationPool.test.ts
@@ -1,6 +1,6 @@
 import {BitArray, fromHexString, toHexString} from "@chainsafe/ssz";
 import {describe, it, expect, beforeEach, beforeAll, afterEach, vi} from "vitest";
-import {SecretKey, Signature, fastAggregateVerify} from "@chainsafe/blst";
+import {SecretKey, Signature, fastAggregateVerify, aggregateSignatures} from "@chainsafe/blst";
 import {CachedBeaconStateAllForks, newFilledArray} from "@lodestar/state-transition";
 import {
   FAR_FUTURE_EPOCH,
@@ -331,9 +331,9 @@ describe("MatchingDataAttestationGroup aggregateInto", function () {
 });
 
 describe("aggregateConsolidation", function () {
-  const sk0 = bls.SecretKey.fromBytes(Buffer.alloc(32, 1));
-  const sk1 = bls.SecretKey.fromBytes(Buffer.alloc(32, 2));
-  const sk2 = bls.SecretKey.fromBytes(Buffer.alloc(32, 3));
+  const sk0 = SecretKey.fromBytes(Buffer.alloc(32, 1));
+  const sk1 = SecretKey.fromBytes(Buffer.alloc(32, 2));
+  const sk2 = SecretKey.fromBytes(Buffer.alloc(32, 3));
   const skArr = [sk0, sk1, sk2];
   const testCases: {
     name: string;
@@ -397,7 +397,7 @@ describe("aggregateConsolidation", function () {
       expect(finalAttestation.aggregationBits.uint8Array).toEqual(new Uint8Array(expectedAggregationBits));
       expect(finalAttestation.committeeBits.toBoolArray()).toEqual(expectedCommitteeBits);
       expect(finalAttestation.data).toEqual(attData);
-      expect(finalAttestation.signature).toEqual(bls.Signature.aggregate(sigArr).toBytes());
+      expect(finalAttestation.signature).toEqual(aggregateSignatures(sigArr).toBytes());
     });
   }
 });
diff --git a/packages/params/src/forkName.ts b/packages/params/src/forkName.ts
index e1f1b2eda73..4a41f063734 100644
--- a/packages/params/src/forkName.ts
+++ b/packages/params/src/forkName.ts
@@ -80,3 +80,16 @@ export const forkBlobs = exclude(forkAll, [ForkName.phase0, ForkName.altair, For
 export function isForkBlobs(fork: ForkName): fork is ForkBlobs {
   return isForkWithdrawals(fork) && fork !== ForkName.capella;
 }
+
+export type ForkPreElectra = ForkPreBlobs | ForkName.deneb;
+export type ForkElectra = Exclude<ForkName, ForkPreElectra>;
+export const forkElectra = exclude(forkAll, [
+  ForkName.phase0,
+  ForkName.altair,
+  ForkName.bellatrix,
+  ForkName.capella,
+  ForkName.deneb,
+]);
+export function isForkElectra(fork: ForkName): fork is ForkElectra {
+  return isForkBlobs(fork) && fork !== ForkName.deneb;
+}
diff --git a/packages/params/src/index.ts b/packages/params/src/index.ts
index 00e9d48346c..e7fd5b97633 100644
--- a/packages/params/src/index.ts
+++ b/packages/params/src/index.ts
@@ -262,7 +262,7 @@ export const KZG_COMMITMENT_SUBTREE_INDEX0 = KZG_COMMITMENT_GINDEX0 - 2 ** KZG_C
 export const BLOBSIDECAR_FIXED_SIZE = ACTIVE_PRESET === PresetName.minimal ? 131672 : 131928;
 
 // Electra Misc
-export const UNSET_DEPOSIT_RECEIPTS_START_INDEX = 2n ** 64n - 1n;
+export const UNSET_DEPOSIT_REQUESTS_START_INDEX = 2n ** 64n - 1n;
 export const FULL_EXIT_REQUEST_AMOUNT = 0;
 export const NEXT_SYNC_COMMITTEE_GINDEX_ELECTRA = 87;
 export const NEXT_SYNC_COMMITTEE_DEPTH_ELECTRA = 6;
diff --git a/packages/params/test/unit/__snapshots__/forkName.test.ts.snap b/packages/params/test/unit/__snapshots__/forkName.test.ts.snap
index 3d7009a7c2e..a54f9dd6913 100644
--- a/packages/params/test/unit/__snapshots__/forkName.test.ts.snap
+++ b/packages/params/test/unit/__snapshots__/forkName.test.ts.snap
@@ -7,12 +7,14 @@ exports[`forkName > should have valid allForks 1`] = `
   "bellatrix",
   "capella",
   "deneb",
+  "electra",
 ]
 `;
 
 exports[`forkName > should have valid blobs forks 1`] = `
 [
   "deneb",
+  "electra",
 ]
 `;
 
@@ -21,6 +23,7 @@ exports[`forkName > should have valid execution forks 1`] = `
   "bellatrix",
   "capella",
   "deneb",
+  "electra",
 ]
 `;
 
@@ -30,6 +33,7 @@ exports[`forkName > should have valid lightclient forks 1`] = `
   "bellatrix",
   "capella",
   "deneb",
+  "electra",
 ]
 `;
 
@@ -37,5 +41,6 @@ exports[`forkName > should have valid withdrawal forks 1`] = `
 [
   "capella",
   "deneb",
+  "electra",
 ]
 `;
diff --git a/packages/state-transition/src/block/processDeposit.ts b/packages/state-transition/src/block/processDeposit.ts
index bc140b864ad..7e343d7fc33 100644
--- a/packages/state-transition/src/block/processDeposit.ts
+++ b/packages/state-transition/src/block/processDeposit.ts
@@ -172,7 +172,7 @@ function isValidDepositSignature(
     const publicKey = PublicKey.fromBytes(pubkey, true);
     const signature = Signature.fromBytes(depositSignature, true);
 
-    return verify(signingRoot, publicKey, signature)
+    return verify(signingRoot, publicKey, signature);
   } catch (e) {
     return false; // Catch all BLS errors: failed key validation, failed signature validation, invalid signature
   }
diff --git a/packages/state-transition/src/block/processDepositRequest.ts b/packages/state-transition/src/block/processDepositRequest.ts
index ca6fe420618..e5dd99a40c4 100644
--- a/packages/state-transition/src/block/processDepositRequest.ts
+++ b/packages/state-transition/src/block/processDepositRequest.ts
@@ -1,5 +1,5 @@
 import {electra} from "@lodestar/types";
-import {ForkSeq, UNSET_DEPOSIT_RECEIPTS_START_INDEX} from "@lodestar/params";
+import {ForkSeq, UNSET_DEPOSIT_REQUESTS_START_INDEX} from "@lodestar/params";
 
 import {CachedBeaconStateElectra} from "../types.js";
 import {applyDeposit} from "./processDeposit.js";
@@ -9,7 +9,7 @@ export function processDepositRequest(
   state: CachedBeaconStateElectra,
   depositRequest: electra.DepositRequest
 ): void {
-  if (state.depositRequestsStartIndex === UNSET_DEPOSIT_RECEIPTS_START_INDEX) {
+  if (state.depositRequestsStartIndex === UNSET_DEPOSIT_REQUESTS_START_INDEX) {
     state.depositRequestsStartIndex = BigInt(depositRequest.index);
   }
 
diff --git a/packages/state-transition/src/slot/upgradeStateToElectra.ts b/packages/state-transition/src/slot/upgradeStateToElectra.ts
index 7031aaa76fc..974f0d6a608 100644
--- a/packages/state-transition/src/slot/upgradeStateToElectra.ts
+++ b/packages/state-transition/src/slot/upgradeStateToElectra.ts
@@ -1,5 +1,5 @@
 import {Epoch, ValidatorIndex, ssz} from "@lodestar/types";
-import {FAR_FUTURE_EPOCH, UNSET_DEPOSIT_RECEIPTS_START_INDEX} from "@lodestar/params";
+import {FAR_FUTURE_EPOCH, UNSET_DEPOSIT_REQUESTS_START_INDEX} from "@lodestar/params";
 import {CachedBeaconStateDeneb} from "../types.js";
 import {CachedBeaconStateElectra, getCachedBeaconState} from "../cache/stateCache.js";
 import {
@@ -59,8 +59,8 @@ export function upgradeStateToElectra(stateDeneb: CachedBeaconStateDeneb): Cache
   stateElectraView.historicalSummaries = stateElectraCloned.historicalSummaries;
 
   // latestExecutionPayloadHeader's depositRequestsRoot and withdrawalRequestsRoot set to zeros by default
-  // default value of depositRequestsStartIndex is UNSET_DEPOSIT_RECEIPTS_START_INDEX
-  stateElectraView.depositRequestsStartIndex = UNSET_DEPOSIT_RECEIPTS_START_INDEX;
+  // default value of depositRequestsStartIndex is UNSET_DEPOSIT_REQUESTS_START_INDEX
+  stateElectraView.depositRequestsStartIndex = UNSET_DEPOSIT_REQUESTS_START_INDEX;
   stateElectraView.depositBalanceToConsume = BigInt(0);
   stateElectraView.exitBalanceToConsume = BigInt(0);
 
@@ -138,8 +138,8 @@ export function upgradeStateToElectraOriginal(stateDeneb: CachedBeaconStateDeneb
   });
 
   // latestExecutionPayloadHeader's depositRequestsRoot and withdrawalRequestsRoot set to zeros by default
-  // default value of depositRequestsStartIndex is UNSET_DEPOSIT_RECEIPTS_START_INDEX
-  stateElectra.depositRequestsStartIndex = UNSET_DEPOSIT_RECEIPTS_START_INDEX;
+  // default value of depositRequestsStartIndex is UNSET_DEPOSIT_REQUESTS_START_INDEX
+  stateElectra.depositRequestsStartIndex = UNSET_DEPOSIT_REQUESTS_START_INDEX;
 
   const validatorsArr = stateElectra.validators.getAllReadonly();
 
diff --git a/packages/state-transition/src/util/electra.ts b/packages/state-transition/src/util/electra.ts
index 53f53aaf8d6..666f45435eb 100644
--- a/packages/state-transition/src/util/electra.ts
+++ b/packages/state-transition/src/util/electra.ts
@@ -28,15 +28,15 @@ export function isFullyWithdrawableValidator(
   balance: number,
   epoch: number
 ): boolean {
-  const {withdrawableEpoch, withdrawalCredentials: withdrawalCredential} = validatorCredential;
+  const {withdrawableEpoch, withdrawalCredentials} = validatorCredential;
 
   if (fork < ForkSeq.capella) {
     throw new Error(`isFullyWithdrawableValidator not supported at forkSeq=${fork} < ForkSeq.capella`);
   }
   const hasWithdrawableCredentials =
     fork >= ForkSeq.electra
-      ? hasExecutionWithdrawalCredential(withdrawalCredential)
-      : hasEth1WithdrawalCredential(withdrawalCredential);
+      ? hasExecutionWithdrawalCredential(withdrawalCredentials)
+      : hasEth1WithdrawalCredential(withdrawalCredentials);
 
   return hasWithdrawableCredentials && withdrawableEpoch <= epoch && balance > 0;
 }
@@ -46,18 +46,18 @@ export function isPartiallyWithdrawableValidator(
   validatorCredential: ValidatorInfo,
   balance: number
 ): boolean {
-  const {effectiveBalance, withdrawalCredentials: withdrawalCredential} = validatorCredential;
+  const {effectiveBalance, withdrawalCredentials} = validatorCredential;
 
   if (fork < ForkSeq.capella) {
     throw new Error(`isPartiallyWithdrawableValidator not supported at forkSeq=${fork} < ForkSeq.capella`);
   }
   const hasWithdrawableCredentials =
     fork >= ForkSeq.electra
-      ? hasExecutionWithdrawalCredential(withdrawalCredential)
-      : hasEth1WithdrawalCredential(withdrawalCredential);
+      ? hasExecutionWithdrawalCredential(withdrawalCredentials)
+      : hasEth1WithdrawalCredential(withdrawalCredentials);
 
   const validatorMaxEffectiveBalance =
-    fork >= ForkSeq.electra ? getValidatorMaxEffectiveBalance(withdrawalCredential) : MAX_EFFECTIVE_BALANCE;
+    fork >= ForkSeq.electra ? getValidatorMaxEffectiveBalance(withdrawalCredentials) : MAX_EFFECTIVE_BALANCE;
   const hasMaxEffectiveBalance = effectiveBalance === validatorMaxEffectiveBalance;
   const hasExcessBalance = balance > validatorMaxEffectiveBalance;
 
diff --git a/packages/state-transition/src/util/genesis.ts b/packages/state-transition/src/util/genesis.ts
index d1f09a9796e..7bdc420d645 100644
--- a/packages/state-transition/src/util/genesis.ts
+++ b/packages/state-transition/src/util/genesis.ts
@@ -8,7 +8,7 @@ import {
   GENESIS_EPOCH,
   GENESIS_SLOT,
   MAX_EFFECTIVE_BALANCE,
-  UNSET_DEPOSIT_RECEIPTS_START_INDEX,
+  UNSET_DEPOSIT_REQUESTS_START_INDEX,
 } from "@lodestar/params";
 import {Bytes32, phase0, Root, ssz, TimeSeconds} from "@lodestar/types";
 
@@ -312,7 +312,7 @@ export function initializeBeaconStateFromEth1(
     stateElectra.latestExecutionPayloadHeader =
       (executionPayloadHeader as CompositeViewDU<typeof ssz.electra.ExecutionPayloadHeader>) ??
       ssz.electra.ExecutionPayloadHeader.defaultViewDU();
-    stateElectra.depositRequestsStartIndex = UNSET_DEPOSIT_RECEIPTS_START_INDEX;
+    stateElectra.depositRequestsStartIndex = UNSET_DEPOSIT_REQUESTS_START_INDEX;
   }
 
   state.commit();
diff --git a/packages/types/src/utils/typeguards.ts b/packages/types/src/utils/typeguards.ts
index a41b45eec54..2af11159878 100644
--- a/packages/types/src/utils/typeguards.ts
+++ b/packages/types/src/utils/typeguards.ts
@@ -1,4 +1,4 @@
-import {ForkBlobs, ForkExecution, ForkName} from "@lodestar/params";
+import {ForkBlobs, ForkExecution, ForkElectra} from "@lodestar/params";
 import {
   BlockContents,
   SignedBeaconBlock,
@@ -68,8 +68,6 @@ export function isSignedBlockContents<F extends ForkBlobs>(
   return (data as SignedBlockContents<F>).kzgProofs !== undefined;
 }
 
-export function isElectraAttestation<F extends ForkName.electra>(
-  attestation: Attestation
-): attestation is Attestation<F> {
+export function isElectraAttestation<F extends ForkElectra>(attestation: Attestation): attestation is Attestation<F> {
   return (attestation as Attestation<F>).committeeBits !== undefined;
 }
diff --git a/yarn.lock b/yarn.lock
index 3e8d9e79c4e..722b6e50bbb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3050,6 +3050,13 @@
   resolved "https://registry.yarnpkg.com/@types/aria-query/-/aria-query-5.0.4.tgz#1a31c3d378850d2778dabb6374d036dcba4ba708"
   integrity sha512-rfT93uj5s0PRL7EzccGMs3brplhcrghnDoV26NqKhCAS1hVo+WdNsPvE/yb6ilfr5hi2MEk6d5EWJTKdxg8jVw==
 
+"@types/buffer-xor@^2.0.0":
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/@types/buffer-xor/-/buffer-xor-2.0.2.tgz#d8c463583b8fbb322ea824562dc78a0c3cea2ca6"
+  integrity sha512-OqdCua7QCTupPnJgmyGJUpxWgbuOi0IMIVslXTSePS2o+qDrDB6f2Pg44zRyqhUA5GbFAf39U8z0+mH4WG0fLQ==
+  dependencies:
+    "@types/node" "*"
+
 "@types/cacheable-request@^6.0.1":
   version "6.0.3"
   resolved "https://registry.yarnpkg.com/@types/cacheable-request/-/cacheable-request-6.0.3.tgz#a430b3260466ca7b5ca5bfd735693b36e7a9d183"
@@ -4626,6 +4633,13 @@ buffer-xor@^1.0.3:
   resolved "https://registry.npmjs.org/buffer-xor/-/buffer-xor-1.0.3.tgz"
   integrity sha1-JuYe0UIvtw3ULm42cp7VHYVf6Nk=
 
+buffer-xor@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/buffer-xor/-/buffer-xor-2.0.2.tgz#34f7c64f04c777a1f8aac5e661273bb9dd320289"
+  integrity sha512-eHslX0bin3GB+Lx2p7lEYRShRewuNZL3fUl4qlVJGGiwoPGftmt8JQgk2Y9Ji5/01TnVDo33E5b5O3vUB1HdqQ==
+  dependencies:
+    safe-buffer "^5.1.1"
+
 buffer@4.9.2, buffer@^4.3.0:
   version "4.9.2"
   resolved "https://registry.npmjs.org/buffer/-/buffer-4.9.2.tgz"