diff --git a/pyproject.toml b/pyproject.toml
index bdc5a020e7663d0007215e8e7d823d1b7c68b768..c6eabfb4958ebddade085e65f4ba3e1909eb306e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -62,6 +62,9 @@ flake8-isort = "^4.0.0"
 pytest-cov = "^2.8.1"
 pytest-sugar = "^0.9.2"
 
+[tool.poetry.plugins."aleksis.app"]
+untis = "aleksis.apps.untis.apps:UntisConfig"
+
 [build-system]
 requires = ["poetry>=0.12"]
 build-backend = "poetry.masonry.api"