diff --git a/requirements/requirements-docs.txt b/requirements/requirements-docs.txt
index e05df77a8..036071f44 100644
--- a/requirements/requirements-docs.txt
+++ b/requirements/requirements-docs.txt
@@ -6,4 +6,5 @@ nbsphinx>=0.8.0
 sphinxcontrib-bibtex>1.0.0
 sphinx-tabs>=1.3.0
 matplotlib>=3.3.2, <3.9.0
+docutils<0.22
 # conda install -c conda-forge pandoc