diff --git a/README.markdown b/README.markdown
index 0fb9cbe..a7c96b2 100644
--- a/README.markdown
+++ b/README.markdown
@@ -13,6 +13,8 @@ This plugin gives syntax highlighting to [todo.txt](http://todotxt.com/) files.
 
 `<leader>-s@` : Sort the file on @Contexts
 
+`<leader>-sd` : Sort the file on dates
+
 `<leader>-j` : Lower the priority of the current line
 
 `<leader>-k` : Increase the priority of the current line
diff --git a/doc/todo.txt b/doc/todo.txt
index 5a52250..1869236 100644
--- a/doc/todo.txt
+++ b/doc/todo.txt
@@ -9,6 +9,8 @@ COMMANDS                                                       *todo-commands*
 
 `<leader>-s@` : Sort the file on @Contexts
 
+`<leader>-sd` : Sort the file on dates
+
 `<leader>-j` : Lower the priority of the current line
 
 `<leader>-k` : Increase the priority of the current line