diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index 4515eb94..a722e7dc 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -582,4 +582,5 @@
     <string name="cinema_mode">影院模式</string>
     <string name="play_with">播放方式</string>
     <string name="transcoding">轉碼</string>
+    <string name="pin_digits_hint">[0-9]</string>
 </resources>