Update README

README.rst

@@ -74,12 +74,10 @@ Install ``plone.restapi`` by adding it to your buildout.
 Python / Plone Compatibility
 ============================
 
-plone.restapi 8 requires Python 3 and works with Plone 5.2 and Plone 6.x.
-
-plone.restapi 8 does not officially support Python 3.6.
+plone.restapi 8 and 9 require Python 3 and work with Plone 5.2 and Plone 6.x.
 
 Python versions that reached their `end-of-life <https://devguide.python.org/versions/>`_,
-including Python 3.6, might still work, but the maintainers do not guarantee this in any way.
+including Python 3.6 and Python 3.7 are not supported any longer.
 
 Use plone.restapi 7 if you are running Python 2.7 or Plone versions below 5.2.