diff --git a/sphinx/conf.py b/sphinx/conf.py
index 709e862..d481d53 100644
--- a/sphinx/conf.py
+++ b/sphinx/conf.py
@@ -35,6 +35,7 @@
 extensions = ['sphinxcontrib.globalsubs',
               'sphinx.ext.intersphinx',
               'sphinx.ext.autosectionlabel',
+              'sphinx-design'
               ]
 
 autosectionlabel_prefix_document = True
diff --git a/sphinx/requirements.txt b/sphinx/requirements.txt
index aacdcbe..0f95909 100644
--- a/sphinx/requirements.txt
+++ b/sphinx/requirements.txt
@@ -28,3 +28,4 @@ sphinxcontrib-serializinghtml==1.1.5
 typing_extensions==4.7.1
 urllib3==2.0.7
 zipp==3.15.0
+sphinx-design