diff --git a/requirements.txt b/requirements.txt
index 8c83958..841273a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 # SPDX-FileCopyrightText: 2021 Open Networking Foundation <info@opennetworking.org>
 # SPDX-License-Identifier: Apache-2.0
 
-Sphinx~=8.2
+Sphinx~=9.0
 doc8~=2.0.0
 reuse~=6.2.0
 sphinx-rtd-theme~=3.0.2