diff --git a/doc/requirements.txt b/doc/requirements.txt
index c04db81b..6f76a29e 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,4 +1,4 @@
-sphinx ==4.0.0
+sphinx ==6.1.3
 cloud_sptheme
 setuptools_scm
 sphinxcontrib-fulltoc