diff --git a/README.rst b/README.rst
index 7976f9ac..391214f2 100644
--- a/README.rst
+++ b/README.rst
@@ -198,8 +198,9 @@ Contributing
 6. Make changes to code, documentation, etc.
 7. Lint source code ``tox -e lint``
 8. Run the tests ``tox -e py27``
-9. Commit changes to your forked repository
-10. Submit a Pull Request on GitHub.
+9. Build documentation ``tox -e docs`` (creates a directory _build under docs where you can find the html)
+10. Commit changes to your forked repository
+11. Submit a Pull Request on GitHub.
 
 Licence
 -------