diff --git a/docs/requirements.txt b/docs/requirements.txt
index 2a2f830..9f370e2 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,3 +1,3 @@
 Pygments==2.19.2
-sphinx==8.2.3
+sphinx==9.1.0
 sphinx_rtd_theme==3.0.2