diff --git a/setup.cfg b/setup.cfg
index 23f89d3..a7dddc1 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -53,7 +53,7 @@ docs =
 	# upstream
 	sphinx >= 3.5
 	# workaround for sphinx/sphinx-doc#11662
-	sphinx < 9.0.5
+	sphinx < 9.1.1
 	jaraco.packaging >= 9.3
 	rst.linker >= 1.9
 	furo