diff --git a/config/locales/ja.yml b/config/locales/ja.yml
index 00cee0c99..8219dfe25 100644
--- a/config/locales/ja.yml
+++ b/config/locales/ja.yml
@@ -1491,10 +1491,10 @@ ja:
   label_alert_caution: 注意
   label_alert_important: 重要
   field_ratio_interval: 進捗率の間隔
-  webhook_event_created: "%{object_name} created"
-  webhook_event_updated: "%{object_name} updated"
-  webhook_event_deleted: "%{object_name} deleted"
-  label_auto_watch_on_issue_assigned_to_me: Issues assigned to me
-  label_relation_remove: Remove relation
-  label_subtask_remove: Remove subtask
-  button_remove: Remove
+  webhook_event_created: "%{object_name} を作成しました"
+  webhook_event_updated: "%{object_name} を更新しました"
+  webhook_event_deleted: "%{object_name} を削除しました"
+  label_auto_watch_on_issue_assigned_to_me: 自分が担当者になったチケット
+  label_relation_remove: 関連を解除
+  label_subtask_remove: 子チケットを解除
+  button_remove: 解除