diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 9fa5e9d..3a125c0 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -75,12 +75,12 @@ local development.
     Now you can make your changes locally.
 
 5.  When you\'re done making changes, check that your changes pass
-    flake8 and the tests, including testing other Python versions with
-    tox:
+    lint and the tests.
 
         $ pip install hatch
         $ make lint
-        $ make test
+        $ make test         # for python in your env
+        $ make test-all     # for all supported python versions
 
 6.  Commit your changes and push your branch to GitHub:
 
diff --git a/Makefile b/Makefile
index 3939f52..af87b65 100644
--- a/Makefile
+++ b/Makefile
@@ -34,6 +34,9 @@ lint:
 test:
 	hatch test
 
+test-all:
+	hatch run test:cov
+
 release: clean
 	hatch build
 	hatch publish
diff --git a/pyproject.toml b/pyproject.toml
index ced3267..1546d90 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,18 +37,19 @@ Source = "https://github.com/onjin/runenv"
 [tool.hatch.version]
 path = "runenv/__about__.py"
 
-[tool.hatch.envs.default]
+[tool.hatch.envs.test]
 dependencies = [
+  "coverage[toml]",
   "pytest",
   "pytest-cov",
 ]
-[tool.hatch.envs.default.scripts]
-cov = "pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=runenv --cov=tests {args}"
-no-cov = "cov --no-cov {args}"
+[tool.hatch.envs.test.scripts]
+cov = 'pytest --cov-report=term-missing --cov-config=pyproject.toml --cov=runenv --cov=tests'
 
-[[tool.hatch.envs.all.matrix]]
+[[tool.hatch.envs.test.matrix]]
 python = ["3.8", "3.9", "3.10", "3.11", "3.12"]
 
+
 [tool.coverage.run]
 branch = true
 parallel = true
diff --git a/tox.ini b/tox.ini
deleted file mode 100644
index 96a5b6e..0000000
--- a/tox.ini
+++ /dev/null
@@ -1,9 +0,0 @@
-[tox]
-envlist = py26, py27, py36, py37, py38, py39
-
-[testenv]
-setenv =
-    PYTHONPATH = {toxinidir}:{toxinidir}/runenv
-commands = python setup.py test
-deps =
-    -r{toxinidir}/requirements.txt