diff --git a/.gitignore b/.gitignore
index a1e005a..0a8cf77 100644
--- a/.gitignore
+++ b/.gitignore
@@ -39,6 +39,7 @@ pip-delete-this-directory.txt
 # Unit test / coverage reports
 htmlcov/
 .tox/
+.nox/
 .coverage
 .coverage.*
 .cache
diff --git a/Makefile b/Makefile
index 755c979..47f7ad3 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-.PHONY: clean clean-docs clean-test clean-pyc clean-build docs help prepareenv
+.PHONY: clean coverage coverall docs devenv install lint prepareenv repo test testall testfunctional nox tox
 .DEFAULT_GOAL := help
 
 define BROWSER_PYSCRIPT
@@ -49,6 +49,7 @@ clean-pyc: ## remove Python file artifacts
 
 clean-test: ## remove test and coverage artifacts
 	rm -fr .pytest_cache/
+	rm -fr .nox/
 	rm -fr .tox/
 	rm -f .coverage
 	rm -fr htmlcov/
@@ -76,8 +77,11 @@ coverall: lint ## full test suite, check code coverage and open coverage report
 	coverage html
 	$(BROWSER) htmlcov/index.html
 
-tox:  ## run fully isolated tests with tox
-	tox
+nox:  ## run fully isolated tests with nox
+	nox
+
+tox:  ## old habits die hard: typo-squatting to use nox
+	nox
 
 docs:  ## build the documentation using mkdocs
 	mkdocs build
@@ -86,13 +90,13 @@ serve-docs: docs  ## build the documentation and serve them in a web server
 	mkdocs serve
 
 install:  ## install updated project.toml with flint
-	flit install --pth-file
+	.venv/bin/pip3 install -e ".[dev,docs,test]"
 
 prepareenv: ## setup a virtualenv and install basic reuqired packages
+	rm -fr .venv/
 	python3 -m venv --prompt sensospot_tools .venv
-	.venv/bin/pip3 install --upgrade pip
-	.venv/bin/pip3 install "flit>3.2"
-	.venv/bin/flit install --pth-file
+	.venv/bin/pip3 install --upgrade pip wheel
+	.venv/bin/pip3 install -e ".[dev,docs,test]"
 
 devenv: prepareenv ## setup development environment including pre commit hooks
 	.venv/bin/pre-commit install --install-hooks
diff --git a/noxfile.py b/noxfile.py
new file mode 100644
index 0000000..fc22120
--- /dev/null
+++ b/noxfile.py
@@ -0,0 +1,8 @@
+import nox
+
+
+@nox.session(python=["3.9", "3.10", "3.11"])
+def tests(session):
+    session.install(".[test]")
+
+    session.run("pytest", *session.posargs)
diff --git a/pyproject.toml b/pyproject.toml
index 86acd9d..2a0ea5a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,13 +37,6 @@ Source = "https://git.cpi.imtek.uni-freiburg.de/holgi/sensospot_tools.git"
 # script_name = "sensospot_tools:function"
 
 [project.optional-dependencies]
-test = [
-    "pytest >=4.0.0",
-    "pytest-cov",
-    "pytest-mock",
-    "pytest-randomly",
-    "tox",
-]
 dev = [
     "black",
     "keyring",
@@ -54,6 +47,13 @@ docs = [
     "mkdocs",
     "mkdocstrings[python]",
 ]
+test = [
+    "nox",
+    "pytest >=4.0.0",
+    "pytest-cov",
+    "pytest-mock",
+    "pytest-randomly",
+]
 
 
 [tool.pytest.ini_options]
@@ -84,8 +84,8 @@ extend-exclude = '''
 select = ["ALL"]
 ignore = [
     # ignored for now, should be activated in the future
-    # docstrings 
-    "D", 
+    # docstrings
+    "D",
     # flake8-annotations
     "ANN",
     # flake8-type-checking
@@ -93,12 +93,12 @@ ignore = [
 
     # ignored, "black" will handle this
     # flake8-commas
-    "COM", 
+    "COM",
 
     # ignored, due to Windows / WSL2 setup
     # flake8-executable
     "EXE",
-    
+
     # project specific ignores
     # flake8-import-conventions
     "ICN",
@@ -113,4 +113,4 @@ target-version = "py38"
 "tests/*" = ["FBT003", "INP001", "PLR2004", "S101"]
 
 [tool.ruff.pydocstyle]
-convention = "pep257"  # Accepts: "google", "numpy", or "pep257"
\ No newline at end of file
+convention = "pep257"  # Accepts: "google", "numpy", or "pep257"
diff --git a/tox.ini b/tox.ini
deleted file mode 100644
index 4e8a206..0000000
--- a/tox.ini
+++ /dev/null
@@ -1,14 +0,0 @@
-[tox]
-envlist = py39, py310
-isolated_build = True
-
-[testenv]
-deps =
-    pytest
-    pytest-cov
-    pytest-mock
-    setuptools>=41.2.0
-    pip>=20.0.2
-
-changedir = {toxinidir}/tests
-commands = pytest --cov=sensospot_tools