diff --git a/.github/workflows/nodejs.yml b/.github/workflows/nodejs.yml
index 408405d..e6e4a7d 100644
--- a/.github/workflows/nodejs.yml
+++ b/.github/workflows/nodejs.yml
@@ -9,8 +9,7 @@ jobs:
     strategy:
       matrix:
         node:
-          - 18
-          - 20
+          - 22
     steps:
       - uses: actions/checkout@1e31de5234b9f8995739874a8ce0492dc87873e2 # v4
         with:
diff --git a/test/rlp.test.js b/test/rlp.test.js
index f4df611..952f66e 100644
--- a/test/rlp.test.js
+++ b/test/rlp.test.js
@@ -5,10 +5,10 @@ import { RLP } from '../lib/esm/rlp.js';
 import { ethHex, ethHexNoLeadingZero } from '../lib/esm/utils.js';
 import { ENCODE_TESTS, DECODE_TESTS, INVALID } from './vectors/monorepo/rlp.js';
 import { getEthersVectors, getViemVectors } from './util.js';
-import { default as RLP_TEST } from './vectors/ethereum-tests/RLPTests/rlptest.json' assert { type: 'json' };
-import { default as INVALID_RLP } from './vectors/ethereum-tests/RLPTests/invalidRLPTest.json' assert { type: 'json' };
-import { default as RANDOM_RLP } from './vectors/ethereum-tests/RLPTests/RandomRLPTests/example.json' assert { type: 'json' };
-import { default as EIP2930 } from './vectors/monorepo/eip2930blockRLP.json' assert { type: 'json' };
+import { default as RLP_TEST } from './vectors/ethereum-tests/RLPTests/rlptest.json' with { type: 'json' };
+import { default as INVALID_RLP } from './vectors/ethereum-tests/RLPTests/invalidRLPTest.json' with { type: 'json' };
+import { default as RANDOM_RLP } from './vectors/ethereum-tests/RLPTests/RandomRLPTests/example.json' with { type: 'json' };
+import { default as EIP2930 } from './vectors/monorepo/eip2930blockRLP.json' with { type: 'json' };
 
 const VIEM_RLP = getViemVectors('rlp.json.gz');
 const ETHERS_RLP = getEthersVectors('rlp.json.gz');
@@ -17,10 +17,12 @@ describe('RLP', () => {
   describe('@ethereumjs/rlp', () => {
     should('encode basic', () => {
       for (const [k, v] of Object.entries(ENCODE_TESTS))
-        for (const inp of v) deepStrictEqual(ethHexNoLeadingZero.encode(RLP.encode(inp)), `0x${k}`, 'encode');
+        for (const inp of v)
+          deepStrictEqual(ethHexNoLeadingZero.encode(RLP.encode(inp)), `0x${k}`, 'encode');
     });
     should('decode basic', () => {
-      const toArr = (elm) => (Array.isArray(elm) ? elm.map(toArr) : ethHexNoLeadingZero.encode(elm));
+      const toArr = (elm) =>
+        Array.isArray(elm) ? elm.map(toArr) : ethHexNoLeadingZero.encode(elm);
       for (const k in DECODE_TESTS)
         deepStrictEqual(toArr(RLP.decode(ethHexNoLeadingZero.decode(k))), DECODE_TESTS[k]);
     });
diff --git a/test/tx.test.js b/test/tx.test.js
index 0ebe5ed..70ae0fa 100644
--- a/test/tx.test.js
+++ b/test/tx.test.js
@@ -4,8 +4,8 @@ import { describe, should } from 'micro-should';
 import { addr, Transaction, messenger } from '../lib/esm/index.js';
 import { RawTx, RlpTx, __tests } from '../lib/esm/tx.js';
 import { add0x, createDecimal, ethHex, formatters } from '../lib/esm/utils.js';
-import { default as TX_VECTORS } from './vectors/transactions.json' assert { type: 'json' };
-import { default as EIP155_VECTORS } from './vectors/eips/eip155.json' assert { type: 'json' };
+import { default as TX_VECTORS } from './vectors/transactions.json' with { type: 'json' };
+import { default as EIP155_VECTORS } from './vectors/eips/eip155.json' with { type: 'json' };
 import * as ethTests from './vectors/eth-tests-tx-vectors.js';
 import { getEthersVectors, getViemVectors } from './util.js';
 
@@ -147,8 +147,8 @@ const SKIPPED_ERRORS = {
     'TransactionWithLeadingZerosValue',
     'TransactionWithLeadingZerosNonce',
     'TransactionWithRvaluePrefixed00BigInt',
-  ]
-}
+  ],
+};
 
 function log(...args) {
   console.log(
@@ -753,7 +753,8 @@ describe('messenger', () => {
     const privateKey = '0x43ff8d9ae58f6f2ef437bd3543362d1d842ecca3b6cc578b46e862b47fd60020';
     const address = '0xba20188aE2Bc7dd72eD8d0c4936154a49b17f08A';
     const msg = 'noble';
-    const sig = '0x425fbe7b4d5078c4f6538f6ae13c385874ce31478324feacf1795e2403bedc3d6e8204d3cc870c95bad45bdfa6e1f631044c8886d0ff8af93923f9bc051b16841b';
+    const sig =
+      '0x425fbe7b4d5078c4f6538f6ae13c385874ce31478324feacf1795e2403bedc3d6e8204d3cc870c95bad45bdfa6e1f631044c8886d0ff8af93923f9bc051b16841b';
     deepStrictEqual(messenger.sign(msg, privateKey), sig);
     deepStrictEqual(messenger.verify(sig, msg, address), true);
   });
@@ -765,8 +766,8 @@ describe('messenger', () => {
       const isValid = messenger.verify(sig, msg, address);
       deepStrictEqual(isValid, true, i);
     }
-  })
-})
+  });
+});
 
 // ESM is broken.
 import url from 'node:url';
diff --git a/test/vectors b/test/vectors
index 5e230e0..5c55a6a 160000
--- a/test/vectors
+++ b/test/vectors
@@ -1 +1 @@
-Subproject commit 5e230e052ffb84e05e3be3139a23f76d17741fa6
+Subproject commit 5c55a6ab8d2a2d3c87e3f1abfe876a8b280e41aa