diff --git a/sphinx/requirements.txt b/sphinx/requirements.txt
index 0f95909..4039140 100644
--- a/sphinx/requirements.txt
+++ b/sphinx/requirements.txt
@@ -10,7 +10,9 @@ imagesize==1.4.1
 importlib-metadata==6.7.0
 Jinja2==3.1.3
 MarkupSafe==2.1.3
+nbsphinx
 packaging==23.2
+pandoc
 pydata-sphinx-theme==0.13.3
 Pygments==2.17.2
 pytz==2023.3.post1