diff --git a/docs/docs/extras/contribs.rst b/docs/docs/extras/contribs.rst
index 0bb8d4581..cc9e22891 100644
--- a/docs/docs/extras/contribs.rst
+++ b/docs/docs/extras/contribs.rst
@@ -18,3 +18,4 @@ Related projects
 * `wonderfall/isso Docker image <https://github.com/Wonderfall/docker-isso>`
 * `a grav plugin to integrate isso comments <https://github.com/Sommerregen/grav-plugin-jscomments>`
 * `a Pelican theme supporting isso comments <https://github.com/Lucas-C/pelican-mg>`
+* `a Sphinx extension to integrate isso comments <https://github.com/sphinx-notes/isso>`