diff --git a/.github/workflows/nodejs.yml b/.github/workflows/nodejs.yml
index 81bf353..0adc854 100644
--- a/.github/workflows/nodejs.yml
+++ b/.github/workflows/nodejs.yml
@@ -11,6 +11,7 @@ jobs:
         node:
           - 18
           - 20
+          - 22
     steps:
       - uses: actions/checkout@1e31de5234b9f8995739874a8ce0492dc87873e2 # v4
       - name: Use Node.js ${{ matrix.node }}
diff --git a/test/basic.test.js b/test/basic.test.js
index cdfad30..bff6fd0 100644
--- a/test/basic.test.js
+++ b/test/basic.test.js
@@ -1864,7 +1864,7 @@ should('unspendable output (gh-66)', () => {
 });
 
 // ESM is broken.
-import url from 'url';
+import url from 'node:url';
 if (import.meta.url === url.pathToFileURL(process.argv[1]).href) {
   should.run();
 }
diff --git a/test/bip174-psbt.test.js b/test/bip174-psbt.test.js
index dc5f0e8..03d8d3b 100644
--- a/test/bip174-psbt.test.js
+++ b/test/bip174-psbt.test.js
@@ -249,7 +249,7 @@ should('bip174-psbt: PSBT garbage', () => {
 });
 
 // ESM is broken.
-import url from 'url';
+import url from 'node:url';
 if (import.meta.url === url.pathToFileURL(process.argv[1]).href) {
   should.run();
 }
diff --git a/test/bip340-schnorr.test.js b/test/bip340-schnorr.test.js
index 5e39d74..4228b05 100644
--- a/test/bip340-schnorr.test.js
+++ b/test/bip340-schnorr.test.js
@@ -31,7 +31,7 @@ for (const v of v340) {
 }
 
 // ESM is broken.
-import url from 'url';
+import url from 'node:url';
 if (import.meta.url === url.pathToFileURL(process.argv[1]).href) {
   should.run();
 }
diff --git a/test/bip341-taproot.test.js b/test/bip341-taproot.test.js
index a7190ff..dc08c36 100644
--- a/test/bip341-taproot.test.js
+++ b/test/bip341-taproot.test.js
@@ -217,7 +217,7 @@ should('verify unspendable key', () => {
 });
 
 // ESM is broken.
-import url from 'url';
+import url from 'node:url';
 if (import.meta.url === url.pathToFileURL(process.argv[1]).href) {
   should.run();
 }
diff --git a/test/bip67-multisig.test.js b/test/bip67-multisig.test.js
index 51cc015..763aa2a 100644
--- a/test/bip67-multisig.test.js
+++ b/test/bip67-multisig.test.js
@@ -79,7 +79,7 @@ for (let i = 0; i < BIP67.length; i++) {
 }
 
 // ESM is broken.
-import url from 'url';
+import url from 'node:url';
 if (import.meta.url === url.pathToFileURL(process.argv[1]).href) {
   should.run();
 }
diff --git a/test/bitcoinjs-test/btcjs-address.test.js b/test/bitcoinjs-test/btcjs-address.test.js
index 5435231..d37f569 100644
--- a/test/bitcoinjs-test/btcjs-address.test.js
+++ b/test/bitcoinjs-test/btcjs-address.test.js
@@ -2,15 +2,15 @@ import { deepStrictEqual, throws } from 'node:assert';
 import { should } from 'micro-should';
 import { hex, base64 } from '@scure/base';
 import * as btc from '../../lib/esm/index.js';
-import { default as p2ms } from './fixtures/bitcoinjs/p2ms.json' assert { type: 'json' };
-import { default as p2pk } from './fixtures/bitcoinjs/p2pk.json' assert { type: 'json' };
-import { default as p2pkh } from './fixtures/bitcoinjs/p2pkh.json' assert { type: 'json' };
-import { default as p2sh } from './fixtures/bitcoinjs/p2sh.json' assert { type: 'json' };
-import { default as p2wpkh } from './fixtures/bitcoinjs/p2wpkh.json' assert { type: 'json' };
-import { default as p2wsh } from './fixtures/bitcoinjs/p2wsh.json' assert { type: 'json' };
-import { default as p2tr } from './fixtures/bitcoinjs-taproot/p2tr.json' assert { type: 'json' };
-import { default as p2tr_ns } from './fixtures/bitcoinjs-taproot/p2tr_ns.json' assert { type: 'json' };
-import { default as p2tr_bitgo } from './fixtures/bitcoinjs-taproot/p2tr_bitgo.json' assert { type: 'json' };
+import { default as p2ms } from './fixtures/bitcoinjs/p2ms.json' with { type: 'json' };
+import { default as p2pk } from './fixtures/bitcoinjs/p2pk.json' with { type: 'json' };
+import { default as p2pkh } from './fixtures/bitcoinjs/p2pkh.json' with { type: 'json' };
+import { default as p2sh } from './fixtures/bitcoinjs/p2sh.json' with { type: 'json' };
+import { default as p2wpkh } from './fixtures/bitcoinjs/p2wpkh.json' with { type: 'json' };
+import { default as p2wsh } from './fixtures/bitcoinjs/p2wsh.json' with { type: 'json' };
+import { default as p2tr } from './fixtures/bitcoinjs-taproot/p2tr.json' with { type: 'json' };
+import { default as p2tr_ns } from './fixtures/bitcoinjs-taproot/p2tr_ns.json' with { type: 'json' };
+import { default as p2tr_bitgo } from './fixtures/bitcoinjs-taproot/p2tr_bitgo.json' with { type: 'json' };
 
 import * as utils from './utils.js';
 
@@ -85,7 +85,7 @@ for (const type in payments) {
 }
 
 // ESM is broken.
-import url from 'url';
+import url from 'node:url';
 if (import.meta.url === url.pathToFileURL(process.argv[1]).href) {
   should.run();
 }
diff --git a/test/bitcoinjs-test/btcjs-taproot.test.js b/test/bitcoinjs-test/btcjs-taproot.test.js
index 02d0cbb..46e10af 100644
--- a/test/bitcoinjs-test/btcjs-taproot.test.js
+++ b/test/bitcoinjs-test/btcjs-taproot.test.js
@@ -3,8 +3,8 @@ import { should } from 'micro-should';
 import { hex, base64 } from '@scure/base';
 import * as btc from '../../lib/esm/index.js';
 import * as P from 'micro-packed';
-import { default as p2tr } from './fixtures/bitcoinjs-taproot/p2tr.json' assert { type: 'json' };
-import { default as tapPsbt } from './fixtures/bitcoinjs-taproot/psbt.json' assert { type: 'json' };
+import { default as p2tr } from './fixtures/bitcoinjs-taproot/p2tr.json' with { type: 'json' };
+import { default as tapPsbt } from './fixtures/bitcoinjs-taproot/psbt.json' with { type: 'json' };
 
 // TODO: move to index.ts as compat layer for bitcoinjs-lib?
 function fromASM(asm) {
@@ -66,7 +66,7 @@ for (let i = 0; i < tapPsbt.signInput.checks.length; i++) {
 }
 
 // ESM is broken.
-import url from 'url';
+import url from 'node:url';
 if (import.meta.url === url.pathToFileURL(process.argv[1]).href) {
   should.run();
 }
diff --git a/test/bitcoinjs-test/btcjs.test.js b/test/bitcoinjs-test/btcjs.test.js
index 5edeb3e..ae8e991 100644
--- a/test/bitcoinjs-test/btcjs.test.js
+++ b/test/bitcoinjs-test/btcjs.test.js
@@ -3,11 +3,11 @@ import { should } from 'micro-should';
 import { hex, base64 } from '@scure/base';
 import * as btc from '../../lib/esm/index.js';
 import * as bip32 from '@scure/bip32';
-import { default as f_transaction } from './fixtures/bitcoinjs/transaction.json' assert { type: 'json' };
-import { default as f_script } from './fixtures/bitcoinjs/script.json' assert { type: 'json' };
-import { default as f_script_number } from './fixtures/bitcoinjs/script_number.json' assert { type: 'json' };
-import { default as f_address } from './fixtures/bitcoinjs/address.json' assert { type: 'json' };
-import { default as psbt } from './fixtures/bitcoinjs/psbt.json' assert { type: 'json' };
+import { default as f_transaction } from './fixtures/bitcoinjs/transaction.json' with { type: 'json' };
+import { default as f_script } from './fixtures/bitcoinjs/script.json' with { type: 'json' };
+import { default as f_script_number } from './fixtures/bitcoinjs/script_number.json' with { type: 'json' };
+import { default as f_address } from './fixtures/bitcoinjs/address.json' with { type: 'json' };
+import { default as psbt } from './fixtures/bitcoinjs/psbt.json' with { type: 'json' };
 import * as utils from './utils.js';
 
 should('version is int32le', () => {
@@ -633,7 +633,7 @@ for (let i = 0; i < psbt.signInputHD.checks.length; i++) {
 }
 
 // ESM is broken.
-import url from 'url';
+import url from 'node:url';
 if (import.meta.url === url.pathToFileURL(process.argv[1]).href) {
   should.run();
 }
diff --git a/test/psbt-test/bip174-psbt-extended.test.js b/test/psbt-test/bip174-psbt-extended.test.js
index b1c86ca..38c8fb2 100644
--- a/test/psbt-test/bip174-psbt-extended.test.js
+++ b/test/psbt-test/bip174-psbt-extended.test.js
@@ -107,7 +107,7 @@ describe('bip174-psbt-extended', () => {
 });
 
 // ESM is broken.
-import url from 'url';
+import url from 'node:url';
 if (import.meta.url === url.pathToFileURL(process.argv[1]).href) {
   should.run();
 }
diff --git a/test/slow.test.js b/test/slow.test.js
index 61d7a5b..92b5bd0 100644
--- a/test/slow.test.js
+++ b/test/slow.test.js
@@ -39,7 +39,7 @@ should('big multisig (ours)', () => {
 });
 
 // ESM is broken.
-import url from 'url';
+import url from 'node:url';
 if (import.meta.url === url.pathToFileURL(process.argv[1]).href) {
   should.run();
 }
diff --git a/test/taproot-multisig.test.js b/test/taproot-multisig.test.js
index 5f4f065..e019551 100644
--- a/test/taproot-multisig.test.js
+++ b/test/taproot-multisig.test.js
@@ -222,7 +222,7 @@ describe('taproot-multisig', () => {
 });
 
 // ESM is broken.
-import url from 'url';
+import url from 'node:url';
 if (import.meta.url === url.pathToFileURL(process.argv[1]).href) {
   should.run();
 }
diff --git a/test/utils.test.js b/test/utils.test.js
index c2723c2..c1d3464 100644
--- a/test/utils.test.js
+++ b/test/utils.test.js
@@ -231,7 +231,7 @@ should('combinations', () => {
 });
 
 // ESM is broken.
-import url from 'url';
+import url from 'node:url';
 if (import.meta.url === url.pathToFileURL(process.argv[1]).href) {
   should.run();
 }
diff --git a/test/utxo-select.test.js b/test/utxo-select.test.js
index af25677..c0ebc8c 100644
--- a/test/utxo-select.test.js
+++ b/test/utxo-select.test.js
@@ -1191,7 +1191,7 @@ describe('UTXO Select', () => {
 });
 
 // ESM is broken.
-import url from 'url';
+import url from 'node:url';
 if (import.meta.url === url.pathToFileURL(process.argv[1]).href) {
   should.run();
 }