diff --git a/docs/requirements.txt b/docs/requirements.txt
index c20cf60..247d821 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -5,5 +5,5 @@ myst-nb
 # under `install_requires` in `setup.cfg` is also listed here!
 # sphinx_rtd_theme
 myst-parser[linkify]
-sphinx>=3.2.1
+sphinx>=8.1.3
 sphinx-autodoc-typehints