diff --git a/pyproject.toml b/pyproject.toml
index 3c261b36f0f3c553bc89d055775c39b434e580c6..f16e05ccad5c9fa440e6a2fb505f641b6a15ea88 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -23,14 +23,18 @@ classifiers = [
     "Topic :: Education"
 ]
 
+[[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 = "supplemental"
 
 [tool.poetry.dependencies]
-python = "^3.9"
-aleksis-core = "^3.0"
+python = "^3.10"
+aleksis-core = "^4.0.0.dev13"
 
 [tool.poetry.dev-dependencies]
 aleksis-builddeps = "*"
diff --git a/tox.ini b/tox.ini
index 6e4b77ab1ded935257117696975c2150772cd85c..66c9e773824ab52d5c0e5574016b83696d5736dc 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@ skip_missing_interpreters = true
 envlist = py39,py310,py311
 
 [testenv]
-whitelist_externals = poetry
+allowlist_externals = poetry
 skip_install = true
 envdir = {toxworkdir}/globalenv
 commands_pre =