diff --git a/docs/topics/downloader-middleware.rst b/docs/topics/downloader-middleware.rst
index 4d7c87404..089d5683a 100644
--- a/docs/topics/downloader-middleware.rst
+++ b/docs/topics/downloader-middleware.rst
@@ -1070,7 +1070,9 @@ In order to use this parser:
 
 * Install `Reppy <https://github.com/seomoz/reppy/>`_ by running ``pip install reppy``
 
-.. warning:: Does not support Python 3.9+
+ .. warning:: `Upstream issue #122
+      <https://github.com/seomoz/reppy/issues/122>`_ prevents reppy usage in
+      Python 3.9+.
 
 * Set :setting:`ROBOTSTXT_PARSER` setting to
   ``scrapy.robotstxt.ReppyRobotParser``