diff --git a/requirements-dev.txt b/requirements-dev.txt
index d102722..9e27e82 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -20,7 +20,7 @@ commitizen==4.12.1
 deprecated==1.3.1 # for commitizen
 
 # Sphinx
-sphinx==8.2.3
+sphinx==9.0.4
 sphinx_rtd_theme==3.1.0
 sphinx-tabs==3.4.7
 GitPython==3.1.46