diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index 11d751420..460766840 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -485,4 +485,7 @@
   <string name="support_the_app_on_liberapay">Liberapayでアプリを支援</string>
   <string name="alert_regex">正規表現に誤りがあります！</string>
   <string name="no_account_yet">No account yet?</string>
+  <string name="toast_instance_unavailable">No timelines was found on this instance!</string>
+  <string name="delete_instance">Delete this instance?</string>
+  <string name="warning_delete_instance">You are going to delete %s from your followed instances.</string>
 </resources>