diff --git a/doc/migrate/3.4.0-4.0.0/README b/doc/migrate/3.4.0-4.0.0/README
index bf51831fef6..6f8d73d9520 100644
--- a/doc/migrate/3.4.0-4.0.0/README
+++ b/doc/migrate/3.4.0-4.0.0/README
@@ -22,4 +22,8 @@ To migrate a 3.4.0 server to version 4.0.0 you should:
 
 - stop TinyERP server 4.0.0
 
+- run the post.py script (located in this directory)
+	You might need to pass it some optional arguments so that it can connect 
+	to the database.
+
 - you are ready to work with the new version.