diff --git a/Resources/doc/installation_composer.rst b/Resources/doc/installation_composer.rst
index b99e0e7..e741a36 100644
--- a/Resources/doc/installation_composer.rst
+++ b/Resources/doc/installation_composer.rst
@@ -37,6 +37,7 @@ Run this command to download the new vendors:
 
 .. code-block:: bash
 
+    $ php composer.phar self-update
     $ php composer.phar update
 
 Enable the `BeSimpleSoapBundle <https://github.com/BeSimple/BeSimpleSoapBundle>`_ in your Kernel class