diff --git a/docs/requirements.txt b/docs/requirements.txt
index e81c6d0..5d5e450 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,3 +1,3 @@
 furo==2025.12.19
-sphinx==9.0.4
+sphinx==9.1.0
 myst_parser==4.0.1