diff --git a/requirements.txt b/requirements.txt
index 5c710c86b..cd98f71c5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,9 @@
+pip requirements
 furo==2024.8.6
 sphinx==7.2.6
 sphinx-autobuild==2021.3.14
 sphinx-inline-tabs==2023.4.21
 sphinx-copybutton==0.5.2
-sphinx-toolbox==3.5.0
+sphinx-toolbox==3.8.0
 sphinx-jsonschema==1.19.1
+sphinx-simplepdf==1.7.0