[#14286] Added versionadded directive

Author: wouterj

components/phpunit_bridge.rst

@@ -877,9 +877,14 @@ If you have installed the bridge through Composer, you can run it by calling e.g
     (not defined in a :ref:`dotenv file <config-dot-env>`).
 
     In the same way, ``SYMFONY_MAX_PHPUNIT_VERSION`` will set the maximum version
-    of PHPUnit to be considered. This  is useful when testing a framework that does
+    of PHPUnit to be considered. This is useful when testing a framework that does
     not support the latest version(s) of PHPUnit.
 
+.. versionadded:: 5.2
+
+    The ``SYMFONY_MAX_PHPUNIT_VERSION`` env variable was introduced in
+    Symfony 5.2.
+
 .. tip::
 
     If you still need to use ``prophecy`` (but not ``symfony/yaml``),