diff --git a/doc/todo.txt b/doc/todo.txt
index 2a28bf4..c84d869 100644
--- a/doc/todo.txt
+++ b/doc/todo.txt
@@ -25,6 +25,7 @@ CONTENTS                                                       *todo-contents*
 	`<localleader>s+`  Sort the file on +Projects
 	`<localleader>s@`  Sort the file on @Contexts
 	`<localleader>sd`  Sort the file on dates
+	`<localleader>sdd` Sort the file on due dates (i.e. due:2015-10-25)
 	
 1.2 Edit priority:                                    *todo-commands-priority*
 	`<localleader>j`   Decrease the priority of the current line