diff --git a/requirements.txt b/requirements.txt
index 69c3ff073b0..e9b5bdc324a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -381,7 +381,7 @@ sortedcontainers==2.4.0
     # via hypothesis
 soupsieve==2.8.3
     # via beautifulsoup4
-sphinx==8.2.3
+sphinx==9.0.4
     # via
     #   qcodes (pyproject.toml)
     #   autodocsumm