diff --git a/docs/requirements.txt b/docs/requirements.txt
index 9a4e8eb0..c1958e96 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,4 @@
-Sphinx==5.3.0
+Sphinx==9.1.0
 breathe==4.35.0
 sphinx-ncs-theme<2.1
 sphinx-tabs>=3.4