diff --git a/README.rst b/README.rst
index 1a28e07..4282134 100644
--- a/README.rst
+++ b/README.rst
@@ -15,6 +15,9 @@ Programme Grant RP2013-K-009: Scientific Properties of Complex Knots
University in the UK. For more information, see the `SPOCK homepage
`__.
+If you use pyknotid in your research, please `cite us
+`__.
+
.. image:: doc/k10_92_ideal_small.png
:align: center
:scale: 25%