diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index 2bc115d..600f0a1 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -38,4 +38,8 @@
     <string name="try_to_redirect">%1$s \n\nwill redirect you to\n\n<b>%2$s</b></string>
     <string name="try_to_redirect_again">Then it will redirect you to\n\n<b>%1$s</b></string>
     <string name="the_app_failed_shortened">The app didn\'t manage to retrieve the full URL</string>
+    <string name="donation_unavailable">Donations are unavailable</string>
+    <string name="donation_unavailable_title">This button should have redirected you to my %1$s donation page but Google does not allow it.\n\nThe best place for using and supporting FOSS apps is <a href="https://f-droid.org/">https://f-droid.org/</a></string>
+    <string name="get_fdroid">Get it on F-Droid</string>
+    <string name="download_with_fdroid">Get the app on F-Droid</string>
 </resources>