diff --git a/config/initializers/i18n.rb b/config/initializers/i18n.rb
index 5e8d3a545e7..b8621f9aa39 100644
--- a/config/initializers/i18n.rb
+++ b/config/initializers/i18n.rb
@@ -64,6 +64,7 @@ Rails.application.configure do
     :mr,
     :ms,
     :my,
+    :'nan-TW',
     :nl,
     :nn,
     :no,