Update requirements.txt

Tom-van-Woudenberg · web-flow · commit 9c6e00017ae0 · 2025-07-03T08:50:56.000+02:00
diff --git a/requirements.txt b/requirements.txt
@@ -7,6 +7,7 @@ sphinx-exercise
 teachbooks-sphinx-tippy
 sphinx-iframes
 sphinx-named-colors
+sphinx-dropdown-toggle
 
 # Now list the packages you want to download directly from GitHub
 git+https://github.com/TeachBooks/Sphinx-Thebe
