diff --git a/requirements-doc.txt b/requirements-doc.txt
index 0dce28c659f..659d7060df5 100644
--- a/requirements-doc.txt
+++ b/requirements-doc.txt
@@ -1,5 +1,5 @@
 # Requirements for doc build, in addition to requirements.txt
-sphinx
+sphinx>=5,<6
 sphinx-material
 jupyter
 notebook