diff --git a/template/requirements/docs.in b/template/requirements/docs.in.jinja
similarity index 79%
rename from template/requirements/docs.in
rename to template/requirements/docs.in.jinja
index e0e1e23..0270269 100644
--- a/template/requirements/docs.in
+++ b/template/requirements/docs.in.jinja
@@ -5,7 +5,7 @@ ipython!=8.7.0  # Breaks syntax highlighting in Jupyter code cells.
 myst-parser
 nbsphinx
 pydata-sphinx-theme>=0.14
-sphinx
+sphinx{% if min_python == "3.11" %}<9.0.0{% endif %}
 sphinx-autodoc-typehints
 sphinx-copybutton
 sphinx-design