diff --git a/requirements/doc/doc-requirements.txt b/requirements/doc/doc-requirements.txt
index 66c0e97dca48..b42ec77568b1 100644
--- a/requirements/doc/doc-requirements.txt
+++ b/requirements/doc/doc-requirements.txt
@@ -11,7 +11,7 @@ sphinx>=1.8.1,<2.0.0
 colorspacious
 ipython
 ipywidgets
-numpydoc>=0.8
+numpydoc>=0.8,<0.9
 pillow>=3.4,!=5.4.0
 sphinx-gallery>=0.2
 sphinx-copybutton