diff --git a/requirements/requirements_doc.txt b/requirements/requirements_doc.txt
index 73400023..d38f61b1 100644
--- a/requirements/requirements_doc.txt
+++ b/requirements/requirements_doc.txt
@@ -1,4 +1,4 @@
-Sphinx==8.2.3
+Sphinx==9.0.1
 jupyter_sphinx==0.5.3
 numpydoc==1.9.0
 ansys-sphinx-theme==1.6.3