diff --git a/docs/requirements.txt b/docs/requirements.txt
index 1225887f..73330922 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -5,7 +5,7 @@ Jinja2==3.1.6
 requests==2.32.5
 sphinx-autobuild==2025.8.25
 sphinx-rtd-theme==3.1.0
-Sphinx==8.2.3
+Sphinx==9.1.0
 sphinxcontrib-bibtex==2.6.5
 starlette==0.52.1
 urllib3==2.6.3