diff --git a/arduino-ide-extension/src/node/i18n/arduino-localization-contribution.ts b/arduino-ide-extension/src/node/i18n/arduino-localization-contribution.ts
index 33aeeb05d..c0165e97d 100644
--- a/arduino-ide-extension/src/node/i18n/arduino-localization-contribution.ts
+++ b/arduino-ide-extension/src/node/i18n/arduino-localization-contribution.ts
@@ -31,6 +31,7 @@ export class ArduinoLocalizationContribution
     ['tr'],
     ['uk', 'uk_UA'],
     ['zh-cn', 'zh'],
+    ['zh-tw', 'zh-Hant'],
   ];
 
   async registerLocalizations(registry: LocalizationRegistry): Promise<void> {
diff --git a/package.json b/package.json
index 2995fd68f..464be7783 100644
--- a/package.json
+++ b/package.json
@@ -90,6 +90,7 @@
     "vscode-language-pack-ru": "https://open-vsx.org/api/MS-CEINTL/vscode-language-pack-ru/1.70.0/file/MS-CEINTL.vscode-language-pack-ru-1.70.0.vsix",
     "vscode-language-pack-tr": "https://open-vsx.org/api/MS-CEINTL/vscode-language-pack-tr/1.70.0/file/MS-CEINTL.vscode-language-pack-tr-1.70.0.vsix",
     "vscode-language-pack-uk": "https://open-vsx.org/api/MS-CEINTL/vscode-language-pack-uk/1.48.3/file/MS-CEINTL.vscode-language-pack-uk-1.48.3.vsix",
-    "vscode-language-pack-zh-hans": "https://open-vsx.org/api/MS-CEINTL/vscode-language-pack-zh-hans/1.70.0/file/MS-CEINTL.vscode-language-pack-zh-hans-1.70.0.vsix"
+    "vscode-language-pack-zh-hans": "https://open-vsx.org/api/MS-CEINTL/vscode-language-pack-zh-hans/1.70.0/file/MS-CEINTL.vscode-language-pack-zh-hans-1.70.0.vsix",
+    "vscode-language-pack-zh-hant": "https://open-vsx.org/api/MS-CEINTL/vscode-language-pack-zh-hant/1.70.0/file/MS-CEINTL.vscode-language-pack-zh-hant-1.70.0.vsix"
   }
 }