--- a/Doc/conf.py
+++ b/Doc/conf.py
@@ -96,7 +96,7 @@
 
 # Minimum version of sphinx required
 # Keep this version in sync with ``Doc/requirements.txt``.
-needs_sphinx = '8.2.0'
+needs_sphinx = '8.1.3'
 
 # Create table of contents entries for domain objects (e.g. functions, classes,
 # attributes, etc.). Default is True.