diff --git a/setup.cfg b/setup.cfg
index b998db5..fde984f 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -72,7 +72,7 @@ dev =
 	wheel>=0.33.6
 
 docs =
-	Sphinx>=7.1.0
+	Sphinx>=7.1.0,<8.0.0
 	sphinx_bootstrap_theme>=0.4.12
 	recommonmark>=0.6
 	sphinx-issues>=1.2.0