diff --git a/tox.ini b/tox.ini
index 92f26b55d9ebd6f5b3db425cab8d151bde0c0c69..ffdea8542dd406b1b9a03f349f3828e0394a7fb3 100644
--- a/tox.ini
+++ b/tox.ini
@@ -42,6 +42,8 @@ commands =
 commands_pre =
     poetry install
     poetry run sh -c "cd aleksis; aleksis-admin compilemessages"
+    poetry run aleksis-admin yarn install
+    poetry run aleksis-admin compile_scss
 commands = poetry build
 
 [testenv:docs]