diff --git a/requirements/requirements_doc.txt b/requirements/requirements_doc.txt
index 978060f5..35805ca0 100644
--- a/requirements/requirements_doc.txt
+++ b/requirements/requirements_doc.txt
@@ -1,4 +1,4 @@
-Sphinx==5.3.0
+Sphinx==6.1.1
 jupyter_sphinx==0.4.0
 numpydoc==1.5.0
 ansys-sphinx-theme==0.8.0