diff --git a/requirements.txt b/requirements.txt
index 4d6bb6c..254927d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,3 +9,6 @@ teachbooks-sphinx-tippy
 # now list the packages (and the respective url) you wish to download from the GitLab package registry
 --extra-index-url https://gitlab.tudelft.nl/api/v4/projects/11239/packages/pypi/simple
 sphinx-thebe ~= 0.9.9
+
+# Now list the files you want to download directly from GitHub
+git+https://github.com/TeachBooks/sphinx-iframes.git