diff --git a/charms/ovn-central-k8s/.github/workflows/tox.yaml b/charms/ovn-central-k8s/.github/workflows/tox.yaml
new file mode 100644
index 00000000..ddfeff1e
--- /dev/null
+++ b/charms/ovn-central-k8s/.github/workflows/tox.yaml
@@ -0,0 +1,27 @@
+name: Python package
+
+on:
+  - push
+  - pull_request
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.8, 3.9]
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install tox tox-gh-actions
+    - name: Lint with tox
+      run: tox -e pep8
+    - name: Test with tox
+      run: tox -e py${{ matrix.python-version }}
diff --git a/charms/ovn-central-k8s/tests/__init__.py b/charms/ovn-central-k8s/tests/__init__.py
deleted file mode 100644
index e69de29b..00000000
diff --git a/charms/ovn-central-k8s/tests/test_charm.py b/charms/ovn-central-k8s/tests/test_charm.py
deleted file mode 100644
index fa1ebfeb..00000000
--- a/charms/ovn-central-k8s/tests/test_charm.py
+++ /dev/null
@@ -1,33 +0,0 @@
-# Copyright 2022 liam
-# See LICENSE file for licensing details.
-#
-# Learn more about testing at: https://juju.is/docs/sdk/testing
-
-import unittest
-from unittest.mock import Mock
-
-from charm import SunbeamOvnCentralOperatorCharm
-from ops.testing import Harness
-
-
-class TestCharm(unittest.TestCase):
-    def setUp(self):
-        self.harness = Harness(SunbeamOvnCentralOperatorCharm)
-        self.addCleanup(self.harness.cleanup)
-        self.harness.begin()
-
-    def test_config_changed(self):
-        self.assertEqual(list(self.harness.charm._stored.things), [])
-        self.harness.update_config({"thing": "foo"})
-        self.assertEqual(list(self.harness.charm._stored.things), ["foo"])
-
-    def test_action(self):
-        # the harness doesn't (yet!) help much with actions themselves
-        action_event = Mock(params={"fail": ""})
-        self.harness.charm._on_fortune_action(action_event)
-
-        self.assertTrue(action_event.set_results.called)
-
-    def test_action_fail(self):
-        action_event = Mock(params={"fail": "fail this"})
-        self.harness.charm._on_fortune_action(action_event)
diff --git a/charms/ovn-central-k8s/tox.ini b/charms/ovn-central-k8s/tox.ini
index 31301b80..987807e9 100644
--- a/charms/ovn-central-k8s/tox.ini
+++ b/charms/ovn-central-k8s/tox.ini
@@ -35,26 +35,16 @@ whitelist_externals =
 passenv = HOME TERM CS_* OS_* TEST_*
 deps = -r{toxinidir}/test-requirements.txt
 
-[testenv:py35]
-basepython = python3.5
-# python3.5 is irrelevant on a focal+ charm.
-commands = /bin/true
-
-[testenv:py36]
-basepython = python3.6
-deps = -r{toxinidir}/requirements.txt
-       -r{toxinidir}/test-requirements.txt
-
-[testenv:py37]
-basepython = python3.7
-deps = -r{toxinidir}/requirements.txt
-       -r{toxinidir}/test-requirements.txt
-
-[testenv:py38]
+[testenv:py3.8]
 basepython = python3.8
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
 
+[testenv:py3.9]
+basepython = python3.9
+deps = -r{toxinidir}/requirements.txt
+       -r{toxinidir}/test-requirements.txt
+
 [testenv:py3]
 basepython = python3
 deps = -r{toxinidir}/requirements.txt