diff --git a/deployment.rst b/deployment.rst
index b594338b8bd..03a5957ba73 100644
--- a/deployment.rst
+++ b/deployment.rst
@@ -167,6 +167,16 @@ as you normally do:
     using :ref:`Symfony Flex <symfony-flex>`) before running this command so
     that the ``post-install-cmd`` scripts run in the ``prod`` environment.
 
+.. tip::
+
+    To improve performance and if you have Symfony Flex 1.2 or later installed, you may
+    leverage this :ref:`feature <configuration-env-var-in-prod>`
+    that dumps your environments variables into a flat file:
+
+    .. code-block:: terminal
+
+        $ composer dump-env prod
+
 D) Clear your Symfony Cache
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~