diff --git a/doc/usage.ipynb b/doc/usage.ipynb
index 0bfa60ca..25461a05 100644
--- a/doc/usage.ipynb
+++ b/doc/usage.ipynb
@@ -658,10 +658,6 @@
     "  [example](https://nbsphinx.readthedocs.io/en/cloud-theme/),\n",
     "  [usage](https://github.com/spatialaudio/nbsphinx/compare/cloud-theme^...cloud-theme)\n",
     "\n",
-    "* [dotted](https://pythonhosted.org/sphinxjp.themes.dotted/):\n",
-    "  [example](https://nbsphinx.readthedocs.io/en/dotted-theme/),\n",
-    "  [usage](https://github.com/spatialaudio/nbsphinx/compare/dotted-theme^...dotted-theme)\n",
-    "\n",
     "* [guzzle_sphinx_theme](https://github.com/guzzle/guzzle_sphinx_theme):\n",
     "  [example](https://nbsphinx.readthedocs.io/en/guzzle-theme/),\n",
     "  [usage](https://github.com/spatialaudio/nbsphinx/compare/guzzle-theme^...guzzle-theme)\n",