diff --git a/lingui.config.js b/lingui.config.js
index da43e35615..013cb7ce2b 100644
--- a/lingui.config.js
+++ b/lingui.config.js
@@ -29,8 +29,8 @@ module.exports = {
     'tr',
     'uk',
     'vi',
+    'yue',
     'zh-CN',
-    'zh-HK',
     'zh-TW',
   ],
   catalogs: [
diff --git a/src/components/hooks/dates.ts b/src/components/hooks/dates.ts
index a1967316cd..09d48620b5 100644
--- a/src/components/hooks/dates.ts
+++ b/src/components/hooks/dates.ts
@@ -73,9 +73,9 @@ const locales: Record<AppLanguage, Locale | undefined> = {
   tr,
   uk,
   vi,
-  ['zh-CN']: zhCN,
-  ['zh-HK']: zhHK,
-  ['zh-TW']: zhTW,
+  ['yue']: zhHK,
+  ['zh-Hans-CN']: zhCN,
+  ['zh-Hant-TW']: zhTW,
 }
 
 /**
diff --git a/src/locale/deviceLocales.ts b/src/locale/deviceLocales.ts
index 1abaa20f69..7827fecd31 100644
--- a/src/locale/deviceLocales.ts
+++ b/src/locale/deviceLocales.ts
@@ -14,7 +14,7 @@ type LocalWithLanguageCode = Locale & {
  * {@link https://github.com/bluesky-social/social-app/pull/4461}
  * {@link https://xml.coverpages.org/iso639a.html}
  *
- * Convert Chinese language tags for Native.
+ * Convert Chinese language tags for Web (RFC 1766 to RFC 4646).
  *
  * {@link https://datatracker.ietf.org/doc/html/rfc5646#appendix-A}
  * {@link https://developer.apple.com/documentation/packagedescription/languagetag}
@@ -41,17 +41,19 @@ export function getLocales() {
     }
 
     if (typeof locale.languageTag === 'string') {
-      if (locale.languageTag.startsWith('zh-Hans')) {
-        // Simplified Chinese to zh-CN
-        locale.languageTag = 'zh-CN'
+      if (
+        locale.languageTag === 'zh-CN' ||
+        locale.languageTag.startsWith('zh-Hans')
+      ) {
+        // Simplified Chinese to zh-Hans-CN
+        locale.languageTag = 'zh-Hans-CN'
       }
-      if (locale.languageTag.startsWith('zh-Hant')) {
-        // Traditional Chinese to zh-TW
-        locale.languageTag = 'zh-TW'
-      }
-      if (locale.languageTag.startsWith('yue')) {
-        // Cantonese (Yue) to zh-HK
-        locale.languageTag = 'zh-HK'
+      if (
+        locale.languageTag === 'zh-TW' ||
+        locale.languageTag.startsWith('zh-Hant')
+      ) {
+        // Traditional Chinese to zh-Hant-TW
+        locale.languageTag = 'zh-Hant-TW'
       }
     }
 
diff --git a/src/locale/helpers.ts b/src/locale/helpers.ts
index ed31faa498..17093d131f 100644
--- a/src/locale/helpers.ts
+++ b/src/locale/helpers.ts
@@ -173,11 +173,11 @@ export function sanitizeAppLanguageSetting(appLanguage: string): AppLanguage {
         return AppLanguage.uk
       case 'vi':
         return AppLanguage.vi
-      case 'zh-CN':
+      case 'yue':
+        return AppLanguage.yue
+      case 'zh-Hans-CN':
         return AppLanguage.zh_CN
-      case 'zh-HK':
-        return AppLanguage.zh_HK
-      case 'zh-TW':
+      case 'zh-Hant-TW':
         return AppLanguage.zh_TW
       default:
         continue
diff --git a/src/locale/i18n.ts b/src/locale/i18n.ts
index 167e36d354..25e735ba50 100644
--- a/src/locale/i18n.ts
+++ b/src/locale/i18n.ts
@@ -39,8 +39,8 @@ import {messages as messagesTh} from '#/locale/locales/th/messages'
 import {messages as messagesTr} from '#/locale/locales/tr/messages'
 import {messages as messagesUk} from '#/locale/locales/uk/messages'
 import {messages as messagesVi} from '#/locale/locales/vi/messages'
+import {messages as messagesYue} from '#/locale/locales/yue/messages'
 import {messages as messagesZh_CN} from '#/locale/locales/zh-CN/messages'
-import {messages as messagesZh_HK} from '#/locale/locales/zh-HK/messages'
 import {messages as messagesZh_TW} from '#/locale/locales/zh-TW/messages'
 import {useLanguagePrefs} from '#/state/preferences'
 
@@ -261,16 +261,16 @@ export async function dynamicActivate(locale: AppLanguage) {
       ])
       break
     }
-    case AppLanguage.zh_CN: {
-      i18n.loadAndActivate({locale, messages: messagesZh_CN})
+    case AppLanguage.yue: {
+      i18n.loadAndActivate({locale, messages: messagesYue})
       await Promise.all([
         import('@formatjs/intl-pluralrules/locale-data/zh'),
         import('@formatjs/intl-numberformat/locale-data/zh'),
       ])
       break
     }
-    case AppLanguage.zh_HK: {
-      i18n.loadAndActivate({locale, messages: messagesZh_HK})
+    case AppLanguage.zh_CN: {
+      i18n.loadAndActivate({locale, messages: messagesZh_CN})
       await Promise.all([
         import('@formatjs/intl-pluralrules/locale-data/zh'),
         import('@formatjs/intl-numberformat/locale-data/zh'),
diff --git a/src/locale/i18n.web.ts b/src/locale/i18n.web.ts
index 83e4acce08..685d964340 100644
--- a/src/locale/i18n.web.ts
+++ b/src/locale/i18n.web.ts
@@ -120,12 +120,12 @@ export async function dynamicActivate(locale: AppLanguage) {
       mod = await import(`./locales/vi/messages`)
       break
     }
-    case AppLanguage.zh_CN: {
-      mod = await import(`./locales/zh-CN/messages`)
+    case AppLanguage.yue: {
+      mod = await import(`./locales/yue/messages`)
       break
     }
-    case AppLanguage.zh_HK: {
-      mod = await import(`./locales/zh-HK/messages`)
+    case AppLanguage.zh_CN: {
+      mod = await import(`./locales/zh-CN/messages`)
       break
     }
     case AppLanguage.zh_TW: {
diff --git a/src/locale/languages.ts b/src/locale/languages.ts
index 6bd0c7f64e..b9abb0c851 100644
--- a/src/locale/languages.ts
+++ b/src/locale/languages.ts
@@ -33,9 +33,9 @@ export enum AppLanguage {
   tr = 'tr',
   uk = 'uk',
   vi = 'vi',
-  zh_CN = 'zh-CN',
-  zh_HK = 'zh-HK',
-  zh_TW = 'zh-TW',
+  yue = 'yue',
+  zh_CN = 'zh-Hans-CN',
+  zh_TW = 'zh-Hant-TW',
 }
 
 interface AppLanguageConfig {
@@ -72,9 +72,9 @@ export const APP_LANGUAGES: AppLanguageConfig[] = [
   {code2: AppLanguage.tr, name: 'Türkçe – Turkish'},
   {code2: AppLanguage.uk, name: 'Українська – Ukrainian'},
   {code2: AppLanguage.vi, name: 'Tiếng Việt – Vietnamese'},
+  {code2: AppLanguage.yue, name: '粵文 – Cantonese'},
   {code2: AppLanguage.zh_CN, name: '简体中文 – Simplified Chinese'},
   {code2: AppLanguage.zh_TW, name: '繁體中文 – Traditional Chinese'},
-  {code2: AppLanguage.zh_HK, name: '粵文 – Cantonese'},
 ]
 
 export const LANGUAGES: Language[] = [
diff --git a/src/locale/locales/zh-HK/messages.po b/src/locale/locales/yue/messages.po
similarity index 100%
rename from src/locale/locales/zh-HK/messages.po
rename to src/locale/locales/yue/messages.po