diff --git a/setup.py b/setup.py
index d1f6d5e..9d46d6c 100644
--- a/setup.py
+++ b/setup.py
@@ -31,7 +31,7 @@ def package_files(
     author_email='team@pyg.org',
     url='https://github.com/pyg-team/pyg_sphinx_theme',
     install_requires=[
-        'sphinx>=4.0',
+        'sphinx>=5.1.1',
         'sphinx_rtd_theme>=1.0',
     ],
     package_data={