diff --git a/setup.cfg b/setup.cfg
index 2ec8963..6e75c1d 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -18,6 +18,7 @@ install_requires =
     pytest-django
     pytest
     pytidylib
+    dc_design_system @ git+ssh://git@github.com:DemocracyClub/design-system.git
 
 [flake8]
 exclude = build,.git,.tox,./tests/.env