diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 75771d5..17af24d 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -15,8 +15,9 @@ jobs:
       with:
         python-version: '3.x'
         cache: pip
-        cache-dependency-path: requirements/dev.txt
+    - name: Install tox
+      run: pip install tox
     - name: Lint
-      run: make lint
+      run: tox -e lint
     - name: Test
-      run: make test
+      run: tox
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index d6b68a7..0c52145 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -18,12 +18,14 @@ jobs:
         python-version: '3.x'
         cache: pip
         cache-dependency-path: .github/workflows/release.yml
+    - name: Install project
+      run: pip install .[dev]
     - name: Lint
-      run: make lint
+      run: tox -e lint
     - name: Test
-      run: make test
+      run: tox
     - name: Install build dependencies
-      run: pip install -U setuptools wheel build calver
+      run: pip install -U setuptools wheel build
     - name: Build
       run: python -m build .
     - name: Publish
diff --git a/.gitignore b/.gitignore
index fe11925..ae59162 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,10 @@
 build/
 dist/
 *.egg-info/
+.tox/
+.venv/
+.env/
+env/
+venv/
+.idea/
+.vscode/
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 45a0ff5..6ca1081 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,5 +1,5 @@
 # Contributing
-How to contributing to this package.
+How to contribute to this package.
 
 ## Running tests
 Run `make test`. This checks whether the auto-generated list of classifiers
diff --git a/Makefile b/Makefile
deleted file mode 100644
index 81c0d1e..0000000
--- a/Makefile
+++ /dev/null
@@ -1,26 +0,0 @@
-BINDIR = $(PWD)/.state/env/bin
-
-.state/env/pyvenv.cfg: requirements/dev.txt
-	rm -rf .state/env
-	python -m venv .state/env
-
-	# install/upgrade general requirements
-	$(BINDIR)/python -m pip install --upgrade pip setuptools wheel
-
-	# install various types of requirements
-	$(BINDIR)/python -m pip install -r requirements/dev.txt
-
-test: .state/env/pyvenv.cfg
-	$(BINDIR)/python -m pip install .
-	$(BINDIR)/pytest
-	$(BINDIR)/python -m tests.lib
-
-lint: .state/env/pyvenv.cfg
-	$(BINDIR)/black --check bin setup.py src tests
-	$(BINDIR)/python bin/sort.py src/trove_classifiers/__init__.py
-	$(BINDIR)/mypy src
-
-reformat: .state/env/pyvenv.cfg
-	$(BINDIR)/black tests src
-
-.PHONY: build test lint reformat
diff --git a/pyproject.toml b/pyproject.toml
index 23542a4..0961161 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,6 +20,11 @@ dynamic = ["version"]
 [project.urls]
 Homepage = "https://github.com/pypa/trove-classifiers"
 
+[project.optional-dependencies]
+dev = [
+    "tox >= 4.0"
+]
+
 [tool.setuptools]
 package-dir = {"" = "src"}
 include-package-data = false
diff --git a/requirements/dev.txt b/requirements/dev.txt
deleted file mode 100644
index 533f3b6..0000000
--- a/requirements/dev.txt
+++ /dev/null
@@ -1,5 +0,0 @@
-black
-jinja2
-natsort
-pytest
-mypy
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..57fbe1e
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,43 @@
+[tox]
+envlist =
+    py311
+    py310
+    py39
+    py38
+    py37
+    lint
+    reformat
+
+isolated_build = true
+skip_missing_interpreters = true
+minversion = 4.0
+
+[testenv]
+description = run the tests with pytest under {envname}
+passenv =
+    PYTEST_*
+deps =
+    pytest >= 7.1
+commands =
+    pytest {posargs}
+    python -m tests.lib
+
+[testenv:lint]
+description = lint the code base
+skip_install = true
+deps =
+    black >= 22.12.0
+    mypy >= 0.991
+    natsort >= 8.2
+commands =
+    black --check bin src tests
+    python bin/sort.py src/trove_classifiers/__init__.py
+    mypy src
+
+[testenv:reformat]
+description = format the code base
+skip_install = true
+deps =
+    black >= 22.12.0
+commands =
+    black tests src