diff --git a/doc/conf.py b/doc/conf.py
index d4bd0999..9ba0ff59 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -15,7 +15,7 @@
 
 supported_confluence_ver = '7.14+'
 supported_python_ver = '3.8+'
-supported_sphinx_ver = '5.3+'
+supported_sphinx_ver = '6.1+'
 
 root_doc = 'contents'