diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
new file mode 100644
index 0000000..0756665
--- /dev/null
+++ b/.github/workflows/tests.yml
@@ -0,0 +1,47 @@
+name: Tests
+
+on:
+  push:
+    branches:
+    - master
+  pull_request:
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version:
+        - 3.6
+        - 3.7
+        - 3.8
+        - 3.9
+
+    steps:
+      - uses: actions/checkout@v2
+      - 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 wheel setuptools tox
+      - name: Run tox targets for ${{ matrix.python-version }}
+        run: |
+          ENV_PREFIX=$(tr -C -d "0-9" <<< "${{ matrix.python-version }}")
+          TOXENV=$(tox --listenvs | grep "^py$ENV_PREFIX" | tr '\n' ',') python -m tox
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.9
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip tox
+      - name: Run lint
+        run: tox -e qa
diff --git a/daphne/testing.py b/daphne/testing.py
index 7cc1182..c302045 100644
--- a/daphne/testing.py
+++ b/daphne/testing.py
@@ -127,8 +127,8 @@ class DaphneProcess(multiprocessing.Process):
 
         from twisted.internet import reactor
 
-        from .server import Server
         from .endpoints import build_endpoint_description_strings
+        from .server import Server
 
         try:
             # Create the server class
@@ -266,8 +266,8 @@ class TestApplication:
 
 
 def _reinstall_reactor():
-    import sys
     import asyncio
+    import sys
 
     from twisted.internet import asyncioreactor
 
diff --git a/setup.cfg b/setup.cfg
index e50af68..0c1709f 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,16 +1,11 @@
-[bdist_wheel]
-universal=1
-
-[tool:pytest]
-addopts = tests/
-
-[isort]
-include_trailing_comma = True
-multi_line_output = 3
-known_first_party = channels,daphne,asgiref,channels_redis
-line_length = 88
-
 [flake8]
 exclude = venv/*,tox/*,docs/*,testproject/*,js_client/*,.eggs/*
-ignore = E123,E128,E266,E402,W503,E731,W601
+extend-ignore = E123, E128, E266, E402, W503, E731, W601
 max-line-length = 120
+
+[isort]
+profile = black
+known_first_party = channels,daphne,asgiref,channels_redis,http_base,http_strategies
+
+[tool:pytest]
+testpaths = tests
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 0000000..a4010d7
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,23 @@
+[tox]
+envlist =
+    py{36,37,38,39}-twisted{187,latest}
+    qa
+
+[testenv]
+usedevelop = true
+extras = tests
+commands =
+    pytest -v {posargs}
+deps =
+    twisted187: twisted==18.7.0
+    twistedlatest: twisted>=20.3.0
+
+[testenv:qa]
+deps =
+    black
+    flake8
+    isort
+commands =
+    flake8 daphne tests
+    black --check daphne tests
+    isort --check-only --diff daphne tests