diff --git a/docs/requirements-doc.txt b/docs/requirements-doc.txt
index a88cee576..d8fcd991e 100644
--- a/docs/requirements-doc.txt
+++ b/docs/requirements-doc.txt
@@ -5,3 +5,4 @@ sphinxcontrib-napoleon
 distlib   # required by micropip
 sphinx-js==3.1
 autodocsumm
+docutils==0.16