diff --git a/vector/src/main/res/values-ja/strings.xml b/vector/src/main/res/values-ja/strings.xml
index 9d008725a4..acbb77a455 100644
--- a/vector/src/main/res/values-ja/strings.xml
+++ b/vector/src/main/res/values-ja/strings.xml
@@ -2380,4 +2380,5 @@
     <string name="closed_poll_option_title">終了した投票</string>
     <string name="closed_poll_option_description">結果は投票を終了した後でのみ明らかにされます</string>
     <string name="location_share_external">以下で開く</string>
+    <string name="upgrade_security">暗号化のアップグレードが利用できます</string>
 </resources>
\ No newline at end of file