diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
new file mode 100644
index 0000000..2629cbd
--- /dev/null
+++ b/.github/workflows/tests.yaml
@@ -0,0 +1,51 @@
+name: test
+on:
+  push:
+    branches:
+      - "master"
+      - "feature/*"
+      - "hotfix/*"
+      - "release/*"
+      - "renovate/*"
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Install dependencies
+        run: make setup
+      - name: Run Linters
+        run: make lint
+  test:
+    strategy:
+      matrix:
+        platform: [ubuntu-latest, macos-latest]
+    runs-on: ${{ matrix.platform }}
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: |
+            3.8
+            3.9
+            3.10
+            3.11
+            3.12
+          cache: 'pip'
+      - name: Install dependencies
+        run: |
+          make setup
+          pip install tox-gh
+      - name: Run tests
+        run: tox -m ci
+        env:
+          PYTEST_ADDOPTS: "--no-header -vv -rN"
diff --git a/Makefile b/Makefile
index 390c954..e5eacdf 100644
--- a/Makefile
+++ b/Makefile
@@ -1,13 +1,8 @@
-# Copyright 2017 Canonical Ltd.
+# Copyright 2017,2024 Canonical Ltd.
 # Licensed under the LGPLv3, see LICENCE file for details.
 include sysdeps.mk
 
 PYTHON = python
-# Since the python-tox package in Ubuntu uses Python 3, use pip to install tox
-# instead. This also works on OSX where tox is not present in Homebrew.
-PIP_SYSDEPS = tox
-
-PIP = sudo pip install $(1)
 
 SYSDEPS_INSTALLED = .sysdeps-installed
 DEVENV = venv
@@ -21,17 +16,18 @@ $(DEVENVPIP):
 $(SYSDEPS_INSTALLED): sysdeps.mk
 ifeq ($(shell command -v apt-get > /dev/null; echo $$?),0)
 	sudo apt-get install --yes $(APT_SYSDEPS)
+else ifeq ($(shell command -v brew > /dev/null; echo $$?),0)
+	brew install $(BREW_SYSDEPS)
 else
 	@echo 'System dependencies can only be installed automatically on'
-	@echo 'systems with "apt-get". On OSX you can manually use Homebrew'
-	@echo 'if there are missing dependencies corresponding to the following'
-	@echo 'Debian packages:'
+	@echo 'systems with "apt-get" or "brew". Dependencies correspond to'
+	@echo 'the following Debian packages:'
 	@echo '$(APT_SYSDEPS).'
 endif
-	sudo pip3 install $(PIP_SYSDEPS)
+	@command -v tox > /dev/null || (echo "Could not find tox on the PATH"; exit 1)
+	@command -v isort > /dev/null || (echo "Could not find isort on the PATH"; exit 1)
 	touch $(SYSDEPS_INSTALLED)
 
-
 .PHONY: check
 check: setup lint
 	@tox
diff --git a/sysdeps.mk b/sysdeps.mk
index d3bffee..34327ae 100644
--- a/sysdeps.mk
+++ b/sysdeps.mk
@@ -1 +1,2 @@
-APT_SYSDEPS = python3-pip python3-setuptools libsodium-dev libffi-dev libssl-dev
+APT_SYSDEPS = python3-pip python3-setuptools libsodium-dev libffi-dev libssl-dev tox isort
+BREW_SYSDEPS = python3 libsodium libffi openssl tox isort
diff --git a/test-requirements.txt b/test-requirements.txt
index 27a0b39..0984b89 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,16 +1,17 @@
-# Copyright 2017 Canonical Ltd.
+# Copyright 2017,2024 Canonical Ltd.
 # Licensed under the LGPLv3, see LICENCE file for details.
 
 coverage==7.3.2
 extras==1.0.0
 fixtures==3.0.0
 flake8==2.4.0
-httmock==1.2.5
+httmock==1.4.0
 linecache2==1.0.0
-mock==1.0.1
+mock==5.1.0
 nose2==0.13.0
 pbr==3.1.1
 python-mimeparse==1.6.0
+setuptools==75.1.0
 testtools==2.3.0; python_version<"3"
 testtools==2.5.0; python_version>="3"
 traceback2==1.4.0
diff --git a/tox.ini b/tox.ini
index b9b393d..f9860bf 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,9 +1,11 @@
-# Copyright 2017 Canonical Ltd.
+# Copyright 2017,2024 Canonical Ltd.
 # Licensed under the LGPLv3, see LICENCE file for details.
 
 [tox]
-envlist = lint, py27, py35, docs
+envlist = lint, py3.8, docs
 # envlist = py27
+# If the system has tox < 4.8, installs a newer tox in a venv.
+minversion = 4.8
 
 [testenv]
 setenv =
@@ -15,6 +17,9 @@ commands =
 deps =
     -r{toxinidir}/test-requirements.txt
 
+[testenv:py3.{8,9,10,11,12,13}]
+labels = ci
+
 [testenv:devenv]
 envdir = devenv
 usedevelop = True