diff --git a/docs/requirements.txt b/docs/requirements.txt
index 61ab60f9..27420ac8 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,4 @@
-sphinx >= 2.2, < 9
+sphinx >= 2.2, < 10
 sphinx-rtd-theme
 sphinx-autoapi
 sphinx-autodoc-typehints