diff --git a/doc/requirements.txt b/doc/requirements.txt
index eed80d1b944..ab23ec7897c 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,5 +1,6 @@
 plotly==5.10.0
 jupytext==1.1.1
+ipywidgets==7.7.2
 jupyter-client<7
 jupyter
 notebook