diff --git a/test/Ed25519Multikey.spec.js b/test/Ed25519Multikey.spec.js
index 51dee3f..0675b2b 100644
--- a/test/Ed25519Multikey.spec.js
+++ b/test/Ed25519Multikey.spec.js
@@ -1,9 +1,9 @@
 /*!
- * Copyright (c) 2020-2022 Digital Bazaar, Inc. All rights reserved.
+ * Copyright (c) 2020-2024 Digital Bazaar, Inc. All rights reserved.
  */
-import chai from 'chai';
 import * as base58btc from 'base58-universal';
 import {mockKey, seed} from './mock-data.js';
+import chai from 'chai';
 import multibase from 'multibase';
 import multicodec from 'multicodec';
 const should = chai.should();
diff --git a/test/compatibility.spec.js b/test/compatibility.spec.js
index 1d6724c..b6ff803 100644
--- a/test/compatibility.spec.js
+++ b/test/compatibility.spec.js
@@ -1,13 +1,13 @@
 /*!
- * Copyright (c) 2020-2022 Digital Bazaar, Inc. All rights reserved.
+ * Copyright (c) 2020-2024 Digital Bazaar, Inc. All rights reserved.
  */
 import chai from 'chai';
 chai.should();
 
 import * as Ed25519Multikey from '../lib/index.js';
-import {stringToUint8Array} from './text-encoder.js';
 import * as StableLibEd25519 from '@stablelib/ed25519';
 import {randomBytes} from 'node:crypto';
+import {stringToUint8Array} from './text-encoder.js';
 
 import {promisify} from 'node:util';
 
diff --git a/test/sign-verify.spec.js b/test/sign-verify.spec.js
index 12d857b..c79a4e4 100644
--- a/test/sign-verify.spec.js
+++ b/test/sign-verify.spec.js
@@ -1,13 +1,13 @@
 /*!
- * Copyright (c) 2020 Digital Bazaar, Inc. All rights reserved.
+ * Copyright (c) 2020-2024 Digital Bazaar, Inc. All rights reserved.
  */
 import chai from 'chai';
 chai.should();
 
+import * as base58btc from 'base58-universal';
 import * as Ed25519Multikey from '../lib/index.js';
 import {mockKey, suites} from './mock-data.js';
 import {stringToUint8Array} from './text-encoder.js';
-import * as base58btc from 'base58-universal';
 
 const keyPair = await Ed25519Multikey.from({
   controller: 'did:example:1234',