diff --git a/docs/requirements-doc.txt b/docs/requirements-doc.txt
index 7ede944..ef84ab5 100644
--- a/docs/requirements-doc.txt
+++ b/docs/requirements-doc.txt
@@ -1,3 +1,3 @@
 myst-parser==4.0.1
-Sphinx==7.1.2
+Sphinx==9.0.4
 sphinx-rtd-theme==3.0.2