diff --git a/docs/faq.rst b/docs/faq.rst
index 2bb6213..a731a86 100644
--- a/docs/faq.rst
+++ b/docs/faq.rst
@@ -31,4 +31,6 @@ You mention other similar Python libraries. Can you point me to those?
 
 `SymPy <http://docs.sympy.org/dev/modules/physics/units.html>`_
 
+`Units <https://bitbucket.org/adonohue/units/>`_
+
 If your are aware of another one, please let me know.