diff --git a/docs/conf.py b/docs/conf.py
index 4289e2a..89e9045 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -27,6 +27,7 @@ extensions = (
     "sphinx.ext.napoleon",
     "pallets_sphinx_themes",
     "sphinxcontrib.autodoc_pydantic",
+    "notfound.extension",
 )
 myst_enable_extensions = ["deflist"]
 intersphinx_mapping = {"python": ("https://docs.python.org/3.10/", None)}