diff --git a/__tests__/utils/fileSize.spec.ts b/__tests__/utils/fileSize.spec.ts
index e8d396b17..cb802cb54 100644
--- a/__tests__/utils/fileSize.spec.ts
+++ b/__tests__/utils/fileSize.spec.ts
@@ -2,11 +2,13 @@
  * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
-import { describe, expect, it } from 'vitest'
+import { beforeEach, describe, expect, it } from 'vitest'
 
 import { formatFileSize, parseFileSize } from '../../lib/index'
+import { setLocale } from '@nextcloud/l10n'
 
 describe('humanFileSize', () => {
+	beforeEach(() => setLocale('en'))
 	describe('formatFileSize', () => {
 		it('renders binary size with decimal units by default', () => {
 			expect(formatFileSize(2048)).toBe('2 KB')
@@ -79,7 +81,7 @@ describe('humanFileSize', () => {
 		})
 
 		it('renders file sizes with the correct locale', function() {
-			document.documentElement.dataset.locale = 'de'
+			setLocale('de')
 			const dataDecimal = [
 				[0, '0 B'],
 				['0', '0 B'],
diff --git a/package-lock.json b/package-lock.json
index 14737c127..9f222c5ed 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,7 +11,7 @@
       "dependencies": {
         "@nextcloud/auth": "^2.5.2",
         "@nextcloud/capabilities": "^1.2.0",
-        "@nextcloud/l10n": "^3.3.0",
+        "@nextcloud/l10n": "^3.4.0",
         "@nextcloud/logger": "^3.0.2",
         "@nextcloud/paths": "^2.2.1",
         "@nextcloud/router": "^3.0.1",
@@ -1561,9 +1561,9 @@
       }
     },
     "node_modules/@nextcloud/l10n": {
-      "version": "3.3.0",
-      "resolved": "https://registry.npmjs.org/@nextcloud/l10n/-/l10n-3.3.0.tgz",
-      "integrity": "sha512-gPvAf5gzqxjnk8l6kr8LQTMN3lv5CLN8tTWwMfavmTbPsKj2/ZUjZhwIm3PcZ3xvJzBi7Ttgrf9xz5cT6CGsWg==",
+      "version": "3.4.0",
+      "resolved": "https://registry.npmjs.org/@nextcloud/l10n/-/l10n-3.4.0.tgz",
+      "integrity": "sha512-K4UBSl0Ou6sXXLxyjuhktRf2FyTCjyvHxJyBLmS2z3YEYcRkpf8ib3XneRwEQIEpzBPQjul2/ZdFlt7umd8Gaw==",
       "license": "GPL-3.0-or-later",
       "dependencies": {
         "@nextcloud/router": "^3.0.1",
@@ -1573,8 +1573,7 @@
         "escape-html": "^1.0.3"
       },
       "engines": {
-        "node": "^22.0.0",
-        "npm": "^10.5.1"
+        "node": "^20 || ^22 || ^24"
       }
     },
     "node_modules/@nextcloud/logger": {
@@ -4019,9 +4018,9 @@
       "integrity": "sha512-A/8PwLk/T7IJDfUdQ68NR24QHa8rIlnN/stiJEBo6dmVUkD4K14LswG0w3VwdeK/o7qOwRUR1k2MhK5Rpy2m7A=="
     },
     "node_modules/caniuse-lite": {
-      "version": "1.0.30001692",
-      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001692.tgz",
-      "integrity": "sha512-A95VKan0kdtrsnMubMKxEKUKImOPSuCpYgxSQBo036P5YYgVIcOYJEgt/txJWqObiRQeISNCfef9nvlQ0vbV7A==",
+      "version": "1.0.30001731",
+      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001731.tgz",
+      "integrity": "sha512-lDdp2/wrOmTRWuoB5DpfNkC0rJDU8DqRa6nYL6HK6sytw70QMopt/NIc/9SM7ylItlBWfACXk0tEn37UWM/+mg==",
       "dev": true,
       "funding": [
         {
@@ -4036,7 +4035,8 @@
           "type": "github",
           "url": "https://github.com/sponsors/ai"
         }
-      ]
+      ],
+      "license": "CC-BY-4.0"
     },
     "node_modules/chai": {
       "version": "5.2.0",
diff --git a/package.json b/package.json
index e57883f46..f7ef713d5 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
   "dependencies": {
     "@nextcloud/auth": "^2.5.2",
     "@nextcloud/capabilities": "^1.2.0",
-    "@nextcloud/l10n": "^3.3.0",
+    "@nextcloud/l10n": "^3.4.0",
     "@nextcloud/logger": "^3.0.2",
     "@nextcloud/paths": "^2.2.1",
     "@nextcloud/router": "^3.0.1",