diff --git a/docs/faq.rst b/docs/faq.rst
index da36cfb70..e92a630b9 100644
--- a/docs/faq.rst
+++ b/docs/faq.rst
@@ -35,4 +35,9 @@ You mention other similar Python libraries. Can you point me to those?
 
 `cf units <https://github.com/SciTools/cf_units>`_
 
+`astropy units <https://github.com/astropy/astropy>`_
+
+`yt <https://github.com/yt-project/yt>`_
+
+
 If your are aware of another one, please contribute a patch to the docs.