diff --git a/pyproject.toml b/pyproject.toml
index 13197940261f1aeab62e33486e72c17718553219..23a65101ffbc4dd711103bf7d6390b5f87033eb4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,12 +24,9 @@ authors = [
     "mirabilos <thorsten.glaser@teckids.org>",
     "Tom Teichler <tom.teichler@teckids.org>"
 ]
-maintainers = [
-    "Dominik George <dominik.george@teckids.org>",
-    "Jonathan Weth <dev@jonathanweth.de>",
-]
-license = "EUPL-1.2"
-homepage = "https://aleksis.org/"
+maintainers = ["Jonathan Weth <dev@jonathanweth.de>", "Dominik George <dominik.george@teckids.org>"]
+license = "EUPL-1.2-or-later"
+homepage = "https://aleksis.org"
 repository = "https://edugit.org/AlekSIS/official/AlekSIS-App-Alsijil"
 documentation = "https://aleksis.edugit.io/AlekSIS/docs/html/"
 classifiers = [
@@ -41,30 +38,72 @@ classifiers = [
     "Typing :: Typed",
 ]
 
+[[tool.poetry.source]]
+name = "PyPI"
+priority = "primary"
+
 [[tool.poetry.source]]
 name = "gitlab"
 url = "https://edugit.org/api/v4/projects/461/packages/pypi/simple"
-secondary = true
-
+priority = "secondary"
 [tool.poetry.dependencies]
 python = "^3.9"
 aleksis-core = "^3.0"
 aleksis-app-chronos = "^3.0"
 aleksis-app-stoelindeling = { version = "^2.0", optional = true }
 
-[tool.poetry.dev-dependencies]
-aleksis-builddeps = "*"
-
 [tool.poetry.extras]
 seatingplans = ["aleksis-app-stoelindeling"]
 
 [tool.poetry.plugins."aleksis.app"]
 alsijil = "aleksis.apps.alsijil.apps:AlsijilConfig"
 
+
+[tool.poetry.group.dev.dependencies]
+django-stubs = "^4.2"
+
+safety = "^2.3.5"
+
+flake8 = "^6.0.0"
+flake8-django = "^1.0.0"
+flake8-fixme = "^1.1.1"
+flake8-mypy = "^17.8.0"
+flake8-bandit = "^4.1.1"
+flake8-builtins = "^2.0.0"
+flake8-docstrings = "^1.5.0"
+flake8-rst-docstrings = "^0.3.0"
+
+black = ">=21.0"
+flake8-black = "^0.3.0"
+
+isort = "^5.0.0"
+flake8-isort = "^6.0.0"
+
+curlylint = "^0.13.0"
+
+[tool.poetry.group.test.dependencies]
+pytest = "^7.2"
+pytest-django = "^4.1"
+pytest-django-testing-postgresql = "^0.2"
+pytest-cov = "^4.0.0"
+pytest-sugar = "^0.9.2"
+selenium = "^4.0.0"
+freezegun = "^1.1.0"
+
+[tool.poetry.group.docs]
+optional = true
+
+[tool.poetry.group.docs.dependencies]
+sphinx = "^7.0"
+sphinxcontrib-django = "^2.3.0"
+sphinxcontrib-svg2pdfconverter = "^1.1.1"
+sphinx-autodoc-typehints = "^1.7"
+sphinx_material = "^0.0.35"
+
 [tool.black]
 line-length = 100
 exclude = "/migrations/"
 
 [build-system]
-requires = ["poetry>=1.0"]
-build-backend = "poetry.masonry.api"
+requires = ["poetry-core>=1.0.0"]
+build-backend = "poetry.core.masonry.api"