diff --git a/app/views/attachment_histories/_attachment_history.json.jbuilder b/app/views/attachment_histories/_attachment_history.json.jbuilder
index afb359e08..285aced42 100644
--- a/app/views/attachment_histories/_attachment_history.json.jbuilder
+++ b/app/views/attachment_histories/_attachment_history.json.jbuilder
@@ -8,3 +8,4 @@ json.downloads_count attachment.downloads_count
 json.created_on attachment.created_on
 json.url attachment_path(attachment, type: 'history').gsub("/api","")
 json.is_pdf attachment.is_history_pdf?
+json.attachment_id attachment.attachment_id