diff --git a/tox.ini b/tox.ini
index 8e1c9e7..1a72eba 100644
--- a/tox.ini
+++ b/tox.ini
@@ -73,6 +73,7 @@ deps:
 	psycopg2
 	psycopg2-binary
 	sorl-thumbnail
+	djangorestframework>=3.12,<3.13  # matching debian bullseye
     Pillow
 	black: pre-commit
 	git+https://git.entrouvert.org/publik-django-templatetags.git