diff --git a/lib/template.go b/lib/template.go
index 2b6fb6f..a47b2ac 100644
--- a/lib/template.go
+++ b/lib/template.go
@@ -207,6 +207,7 @@ func bookJsonRaw(book database.Book) map[string]interface{} {
 		"lang":        book.Lang,
 		"isbn":        book.Isbn,
 		"size":        book.FileSize,
+		"sha256":      book.FileHash,
 		"cover":       cover,
 		"cover_small": coverSmall,
 		"download":    "/download/" + book.ID + "/" + book.Title + ".epub",