diff --git a/docs/requirements.txt b/docs/requirements.txt
index b3107631..a81bfc73 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,5 +1,5 @@
 myst-parser==4.0.1
-sphinx==8.2.3
+sphinx==9.1.0
 sphinx-autoapi==3.6.1
 sphinx-autodoc-typehints==3.1.0
 sphinx-rtd-theme==3.0.2