diff --git a/README.md b/README.md
index 3c3b757..d83ffe4 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,7 @@ related projects are also exposed as toplevel directories:
 * [mpl-altair](https://github.com/matplotlib/mpl-altair)
 * [mpl-bench](https://github.com/matplotlib/mpl-bench)
 * [mpl-gui](https://github.com/matplotlib/mpl-gui)
+* [mpl-sphinx-theme](https://github.com/matplotlib/mpl-sphinx-theme)
 * [mpl-third-party](https://github.com/matplotlib/mpl-third-party)
 
 Ansible configuration
diff --git a/matplotlib.org.yml b/matplotlib.org.yml
index 5fe6414..86b10d5 100644
--- a/matplotlib.org.yml
+++ b/matplotlib.org.yml
@@ -20,6 +20,7 @@
       - mpl-altair
       - mpl-bench
       - mpl-gui
+      - mpl-sphinx-theme
       - mpl-third-party
       - pytest-mpl
   vars_files: