diff --git a/org-msg.el b/org-msg.el
index 75e40f3..b3d3601 100644
--- a/org-msg.el
+++ b/org-msg.el
@@ -6,7 +6,7 @@
 ;; Created: January 2018
 ;; Keywords: extensions mail
 ;; Homepage: https://github.com/jeremy-compostella/org-msg
-;; Package-Version: 3.9
+;; Package-Version: 4.0
 ;; Package-Requires: ((emacs "24.4") (htmlize "1.54"))
 
 ;; This program is free software; you can redistribute it and/or modify