diff --git a/requirements.txt b/requirements.txt
index 849cdf4..4d6bb6c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,6 +3,8 @@ teachbooks # depends on jupyter-book
 jupyterbook-patches
 sphinx-image-inverter
 download_link_replacer
+sphinx-exercise
+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