diff --git a/requirements-dev.txt b/requirements-dev.txt
index 8762535b..abf7696b 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -6,4 +6,4 @@ flake8-bugbear==24.12.12
 flake8-import-order==0.19.2
 flake8-requirements==2.3.0
 mypy==1.19.1
-sphinx==7.4.7
+sphinx==9.0.4