diff --git a/packages/beacon-node/test/sim/electra-interop.test.ts b/packages/beacon-node/test/sim/electra-interop.test.ts
index 37bed1f7b843..962e0aa5dea9 100644
--- a/packages/beacon-node/test/sim/electra-interop.test.ts
+++ b/packages/beacon-node/test/sim/electra-interop.test.ts
@@ -219,11 +219,11 @@ describe("executionEngine / ExecutionEngineHttp", function () {
       }
     }
 
-    if (payload.depositRequests.length !== 1) {
-      throw Error(`Number of depositRequests mismatched. Expected: 1, actual: ${payload.depositRequests.length}`);
+    if (payload.depositReceipts.length !== 1) {
+      throw Error(`Number of depositRequests mismatched. Expected: 1, actual: ${payload.depositReceipts.length}`);
     }
 
-    const actualDepositRequest = payload.depositRequests[0];
+    const actualDepositRequest = payload.depositReceipts[0];
     assert.deepStrictEqual(
       actualDepositRequest,
       depositRequestB,
diff --git a/packages/fork-choice/test/perf/forkChoice/util.ts b/packages/fork-choice/test/perf/forkChoice/util.ts
index dbd049e257c1..6c04ac817fb2 100644
--- a/packages/fork-choice/test/perf/forkChoice/util.ts
+++ b/packages/fork-choice/test/perf/forkChoice/util.ts
@@ -41,7 +41,7 @@ export function initializeForkChoice(opts: Opts): ForkChoice {
     genesisSlot
   );
 
-  const balances = new Uint8Array(Array.from({length: opts.initialValidatorCount}, () => 32));
+  const balances = new Uint16Array(Array.from({length: opts.initialValidatorCount}, () => 32));
 
   const fcStore: IForkChoiceStore = {
     currentSlot: genesisSlot,
diff --git a/packages/fork-choice/test/unit/forkChoice/forkChoice.test.ts b/packages/fork-choice/test/unit/forkChoice/forkChoice.test.ts
index fcb7376cffa8..40988a0e4a71 100644
--- a/packages/fork-choice/test/unit/forkChoice/forkChoice.test.ts
+++ b/packages/fork-choice/test/unit/forkChoice/forkChoice.test.ts
@@ -52,16 +52,16 @@ describe("Forkchoice", function () {
     currentSlot: genesisSlot + 1,
     justified: {
       checkpoint: {epoch: genesisEpoch, root: fromHexString(finalizedRoot), rootHex: finalizedRoot},
-      balances: new Uint8Array([32]),
+      balances: new Uint16Array([32]),
       totalBalance: 32,
     },
     unrealizedJustified: {
       checkpoint: {epoch: genesisEpoch, root: fromHexString(finalizedRoot), rootHex: finalizedRoot},
-      balances: new Uint8Array([32]),
+      balances: new Uint16Array([32]),
     },
     finalizedCheckpoint: {epoch: genesisEpoch, root: fromHexString(finalizedRoot), rootHex: finalizedRoot},
     unrealizedFinalizedCheckpoint: {epoch: genesisEpoch, root: fromHexString(finalizedRoot), rootHex: finalizedRoot},
-    justifiedBalancesGetter: () => new Uint8Array([32]),
+    justifiedBalancesGetter: () => new Uint16Array([32]),
     equivocatingIndices: new Set(),
   };
 
diff --git a/packages/fork-choice/test/unit/forkChoice/getProposerHead.test.ts b/packages/fork-choice/test/unit/forkChoice/getProposerHead.test.ts
index cc14b5b57b92..f603a4069b83 100644
--- a/packages/fork-choice/test/unit/forkChoice/getProposerHead.test.ts
+++ b/packages/fork-choice/test/unit/forkChoice/getProposerHead.test.ts
@@ -102,12 +102,12 @@ describe("Forkchoice / GetProposerHead", function () {
     currentSlot: genesisSlot + 1,
     justified: {
       checkpoint: {epoch: genesisEpoch, root: fromHexString(genesisBlock.blockRoot), rootHex: genesisBlock.blockRoot},
-      balances: new Uint8Array(Array(32).fill(150)),
+      balances: new Uint16Array(Array(32).fill(150)),
       totalBalance: 32 * 150,
     },
     unrealizedJustified: {
       checkpoint: {epoch: genesisEpoch, root: fromHexString(genesisBlock.blockRoot), rootHex: genesisBlock.blockRoot},
-      balances: new Uint8Array(Array(32).fill(150)),
+      balances: new Uint16Array(Array(32).fill(150)),
     },
     finalizedCheckpoint: {
       epoch: genesisEpoch,
@@ -119,7 +119,7 @@ describe("Forkchoice / GetProposerHead", function () {
       root: fromHexString(genesisBlock.blockRoot),
       rootHex: genesisBlock.blockRoot,
     },
-    justifiedBalancesGetter: () => new Uint8Array(Array(32).fill(150)),
+    justifiedBalancesGetter: () => new Uint16Array(Array(32).fill(150)),
     equivocatingIndices: new Set(),
   };
 
diff --git a/packages/fork-choice/test/unit/protoArray/computeDeltas.test.ts b/packages/fork-choice/test/unit/protoArray/computeDeltas.test.ts
index fde551d43cda..4428807bd13d 100644
--- a/packages/fork-choice/test/unit/protoArray/computeDeltas.test.ts
+++ b/packages/fork-choice/test/unit/protoArray/computeDeltas.test.ts
@@ -253,7 +253,7 @@ describe("computeDeltas", () => {
       nextEpoch: 0,
     }));
 
-    const balances = new Uint8Array([firstBalance, secondBalance]);
+    const balances = new Uint16Array([firstBalance, secondBalance]);
     // 1st validator is part of an attester slashing
     const equivocatingIndices = new Set([0]);
     let deltas = computeDeltas(indices.size, votes, balances, balances, equivocatingIndices);
diff --git a/packages/state-transition/src/epoch/processRewardsAndPenalties.ts b/packages/state-transition/src/epoch/processRewardsAndPenalties.ts
index 041655d75825..6c5d5aa3cb5a 100644
--- a/packages/state-transition/src/epoch/processRewardsAndPenalties.ts
+++ b/packages/state-transition/src/epoch/processRewardsAndPenalties.ts
@@ -28,7 +28,7 @@ export function processRewardsAndPenalties(
   const balances = state.balances.getAll();
 
   for (let i = 0, len = rewards.length; i < len; i++) {
-    const result = balances[i] + rewards[i] - penalties[i] - (slashingPenalties[i] ?? 0)
+    const result = balances[i] + rewards[i] - penalties[i] - (slashingPenalties[i] ?? 0);
     balances[i] = Math.max(result, 0);
   }