diff --git a/pyproject.toml b/pyproject.toml
index 9ed3194..233f0e0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,6 +22,7 @@ classifiers = [
   "Programming Language :: Python :: 3.7",
   "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
+  "Programming Language :: Python :: 3 :: Only",
   "Topic :: Software Development :: Libraries",
   "Topic :: Software Development :: Libraries :: Python Modules",
   "Topic :: System :: Networking",
@@ -72,20 +73,3 @@ use_parentheses = true
 [tool.pylint.messages_control]
 # black is taking care of this
 disable = "bad-continuation"
-
-
-[tool.tox]
-legacy_tox_ini = """
-[tox]
-envlist = py37,py38,py39
-isolated_build = True
-[testenv]
-# whitelist_externals = poetry
-deps =
-  poetry
-commands =
-  poetry install -v
-  poetry run bandit -c bandit.yaml -r src/pyrad3
-  poetry run pytest -n 8 --black --isort --pylint --mypy --flake8 --cov=pyrad3
-"""
-