diff --git a/update.go b/update.go
index 329563e..7932745 100644
--- a/update.go
+++ b/update.go
@@ -74,6 +74,14 @@ func (u *Update) DocumentName() string {
 	return u.Message.Document.FileName
 }
 
+func (u *Update) DocumentSize() int {
+	return u.Message.Document.FileSize
+}
+
+func (u *Update) DocumentMimeType() string {
+	return u.Message.Document.MimeType
+}
+
 func (u *Update) HasPhotos() bool {
 	return u.Message != nil && u.Message.Photo != nil &&
 		len(u.Message.Photo) != 0