diff --git a/static/locales/ja.yaml b/static/locales/ja.yaml
index 33a10248..88a3beaf 100644
--- a/static/locales/ja.yaml
+++ b/static/locales/ja.yaml
@@ -354,6 +354,7 @@ Video:
   Remove From History: 履歴から削除
   Video has been marked as watched: 視聴済みにしました
   Mark As Watched: 視聴済みにする
+  Autoplay: 自動再生
 Videos:
   #& Sort By
   Sort By: