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ruudk · web-flow · commit 267a15771506 · 2019-11-05T21:17:13.000+01:00
diff --git a/messenger.rst b/messenger.rst
@@ -1223,7 +1223,14 @@ Then, make sure to "route" your message to *both* transports:
 
 That's it! You can now consume each transport:
 
-It's also possible to specify `from_transport` as attribute on the `messenger.message_handler` tag.
+.. note::
+
+    It is possible to specify ``from_transport`` as attribute on the ``messenger.message_handler`` tag.
+
+    .. versionadded:: 4.4
+        
+        The ability to specify ``from_transport`` on the ``messenger.message_handler`` tag
+        itself, was added in Symfony 4.4.
 
 .. code-block:: terminal
 
