diff --git a/setup.py b/setup.py
index e14103049e..7827c7d3e6 100644
--- a/setup.py
+++ b/setup.py
@@ -62,7 +62,7 @@ def maybe_require(pkg):
 
 docs = set([
     'docutils',
-    'Sphinx',
+    'Sphinx<=5.0.2',
     'nbsphinx',
     'sphinx_rtd_theme',
     'ipython',