diff --git a/docs/source/whatsnew/pr/mimerenderer.rst b/docs/source/whatsnew/pr/mimerenderer.rst
index 58d474a..339905f 100644
--- a/docs/source/whatsnew/pr/mimerenderer.rst
+++ b/docs/source/whatsnew/pr/mimerenderer.rst
@@ -17,3 +17,6 @@ contribution is welcomed.
 
 We welcome any feedback on the API. See :ref:`shell_mimerenderer` for more
 informations.
+
+This is originally based on work form in :ghpull:`10610` from stephanh42
+started over two years ago, and still a lot need to be done.