diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 975a5af..7c6e89f 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -10,6 +10,10 @@ jobs:
   run:
     name: "tests & coverage"
     runs-on: macos-latest
+    strategy:
+      matrix:
+        python-version: [3.8]
+
     env:
       COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
       CODACY_PROJECT_TOKEN: ${{ secrets.CODACY_PROJECT_TOKEN }}
@@ -19,7 +23,7 @@ jobs:
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v2
       with:
-        python-version: 3.8
+        python-version: ${{ matrix.python-version }}
 
     - name: Install test dependencies
       run: |
diff --git a/tests/conftest.py b/tests/conftest.py
index e482ccf..da9ac77 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -11,7 +11,6 @@
 """Common pytest fixtures."""
 
 
-
 from contextlib import contextmanager
 import os
 from shutil import rmtree
diff --git a/tests/test_background.py b/tests/test_background.py
index 7040cb4..03b98f9 100644
--- a/tests/test_background.py
+++ b/tests/test_background.py
@@ -11,7 +11,6 @@
 """Unit tests for :mod:`workflow.background`."""
 
 
-
 import os
 from time import sleep
 
diff --git a/tests/test_notify.py b/tests/test_notify.py
index 99b20cb..704d612 100644
--- a/tests/test_notify.py
+++ b/tests/test_notify.py
@@ -11,7 +11,6 @@
 """Unit tests for notifications."""
 
 
-
 import hashlib
 import logging
 import os
diff --git a/tests/test_util_atomic.py b/tests/test_util_atomic.py
index f3f46d5..4a6df16 100644
--- a/tests/test_util_atomic.py
+++ b/tests/test_util_atomic.py
@@ -11,7 +11,6 @@
 """Unit tests for :func:`~workflow.util.atomic_writer`."""
 
 
-
 import json
 import os
 
diff --git a/tests/test_util_lockfile.py b/tests/test_util_lockfile.py
index b02aa28..17294c6 100644
--- a/tests/test_util_lockfile.py
+++ b/tests/test_util_lockfile.py
@@ -11,7 +11,6 @@
 """Test LockFile functionality."""
 
 
-
 from collections import namedtuple
 from multiprocessing import Pool
 import os
diff --git a/tests/test_util_uninterruptible.py b/tests/test_util_uninterruptible.py
index 56b8a1a..d4a0710 100644
--- a/tests/test_util_uninterruptible.py
+++ b/tests/test_util_uninterruptible.py
@@ -11,7 +11,6 @@
 """Unit tests for ``uninterruptible`` decorator."""
 
 
-
 import os
 import signal
 
diff --git a/tests/test_web.py b/tests/test_web.py
index fc5a171..a071fcb 100644
--- a/tests/test_web.py
+++ b/tests/test_web.py
@@ -344,12 +344,15 @@ def test_file_upload_without_form_data(self):
     def test_file_upload_with_unicode(self):
         """File upload with Unicode contents is converted to bytes"""
         url = HTTPBIN_URL + '/post'
+        content = 'Hére ïs søme ÜÑÎÇÒDÈ™'
         files = {'file': {'filename': 'cönfüsed.txt',
-                          'content': 'Hére ïs søme ÜÑÎÇÒDÈ™'
+                          'content': content
                           }}
         r = web.post(url, files=files)
         self.assertEqual(r.status_code, 200)
         data = r.json()
+        bindata = data['files']['file']
+        self.assertEqual(bindata, content)
 
     def test_json_encoding(self):
         """JSON decoded correctly"""
diff --git a/tests/test_web_http_encoding.py b/tests/test_web_http_encoding.py
index de69ef4..76b0cf1 100644
--- a/tests/test_web_http_encoding.py
+++ b/tests/test_web_http_encoding.py
@@ -11,7 +11,6 @@
 """HTTP unit tests."""
 
 
-
 import os
 
 import pytest
diff --git a/tests/test_workflow.py b/tests/test_workflow.py
index 8afe0b9..d4c6475 100644
--- a/tests/test_workflow.py
+++ b/tests/test_workflow.py
@@ -11,7 +11,6 @@
 """Unit tests for :mod:`workflow.Workflow`."""
 
 
-
 import logging
 import os
 import sys
diff --git a/tests/test_workflow3.py b/tests/test_workflow3.py
index 9ccf88b..dd604eb 100644
--- a/tests/test_workflow3.py
+++ b/tests/test_workflow3.py
@@ -11,7 +11,6 @@
 """Test Workflow3 feedback."""
 
 
-
 import json
 import os
 from io import StringIO
diff --git a/tests/test_workflow_encoding.py b/tests/test_workflow_encoding.py
index 88371bc..c9e85bf 100644
--- a/tests/test_workflow_encoding.py
+++ b/tests/test_workflow_encoding.py
@@ -7,7 +7,6 @@
 """Unit tests for serializers."""
 
 
-
 import pytest
 
 
diff --git a/tests/test_workflow_env.py b/tests/test_workflow_env.py
index bc51066..2be8bc9 100644
--- a/tests/test_workflow_env.py
+++ b/tests/test_workflow_env.py
@@ -7,7 +7,6 @@
 """Unit tests for environment/info.plist."""
 
 
-
 import logging
 import os
 
diff --git a/tests/test_workflow_files.py b/tests/test_workflow_files.py
index b4834e1..a468c5d 100644
--- a/tests/test_workflow_files.py
+++ b/tests/test_workflow_files.py
@@ -7,7 +7,6 @@
 """Unit tests for Workflow directory & file APIs."""
 
 
-
 import json
 import os
 import time
diff --git a/tests/test_workflow_filter.py b/tests/test_workflow_filter.py
index 1dc64da..848c6e6 100644
--- a/tests/test_workflow_filter.py
+++ b/tests/test_workflow_filter.py
@@ -7,7 +7,6 @@
 """Unit tests for :meth:`workflow.Workflow.filter`."""
 
 
-
 import pytest
 
 from workflow.workflow import (
diff --git a/tests/test_workflow_import.py b/tests/test_workflow_import.py
index cc749e8..db11d04 100644
--- a/tests/test_workflow_import.py
+++ b/tests/test_workflow_import.py
@@ -7,7 +7,6 @@
 """Unit tests for sys.path manipulation."""
 
 
-
 import os
 import sys
 
diff --git a/tests/test_workflow_keychain.py b/tests/test_workflow_keychain.py
index f24d709..07e973a 100644
--- a/tests/test_workflow_keychain.py
+++ b/tests/test_workflow_keychain.py
@@ -7,7 +7,6 @@
 """Unit tests for Keychain API."""
 
 
-
 import pytest
 
 from workflow.workflow import PasswordNotFound, KeychainError
diff --git a/tests/test_workflow_magic.py b/tests/test_workflow_magic.py
index 4f514dd..b193703 100644
--- a/tests/test_workflow_magic.py
+++ b/tests/test_workflow_magic.py
@@ -11,7 +11,6 @@
 """Unit tests for magic arguments."""
 
 
-
 import os
 
 import pytest
diff --git a/tests/test_workflow_magic_alfred2.py b/tests/test_workflow_magic_alfred2.py
index 2869853..211eae3 100644
--- a/tests/test_workflow_magic_alfred2.py
+++ b/tests/test_workflow_magic_alfred2.py
@@ -7,7 +7,6 @@
 """Unit tests for Alfred 2 magic argument handling."""
 
 
-
 import pytest
 
 from workflow import Workflow
diff --git a/tests/test_workflow_run.py b/tests/test_workflow_run.py
index 8e37657..1204dc3 100644
--- a/tests/test_workflow_run.py
+++ b/tests/test_workflow_run.py
@@ -7,7 +7,6 @@
 """Unit tests for Workflow.run."""
 
 
-
 from io import StringIO
 import sys
 
diff --git a/tests/test_workflow_serializers.py b/tests/test_workflow_serializers.py
index 868721a..adc65e8 100644
--- a/tests/test_workflow_serializers.py
+++ b/tests/test_workflow_serializers.py
@@ -11,7 +11,6 @@
 """Unit tests for serializer classes."""
 
 
-
 import os
 
 import pytest
diff --git a/tests/test_workflow_settings.py b/tests/test_workflow_settings.py
index 9721129..190e0d2 100644
--- a/tests/test_workflow_settings.py
+++ b/tests/test_workflow_settings.py
@@ -11,7 +11,6 @@
 """Unit tests for Workflow.settings API."""
 
 
-
 import json
 import os
 import shutil
diff --git a/tests/test_workflow_update.py b/tests/test_workflow_update.py
index 7a64d5c..91fba29 100644
--- a/tests/test_workflow_update.py
+++ b/tests/test_workflow_update.py
@@ -11,7 +11,6 @@
 """Unit tests for Workflow's update API."""
 
 
-
 from contextlib import contextmanager
 
 import os
@@ -91,13 +90,19 @@ def update(wf):
     with fakeresponse(httpserver, RELEASES_JSON, HTTP_HEADERS_JSON):
         with ctx() as (wf, c):
             wf.run(update)
-            assert c.cmd == ['/usr/bin/python3', '-m', 'workflow.background', '__workflow_update_check']
+            assert c.cmd == [
+                '/usr/bin/python3', '-m', 'workflow.background',
+                '__workflow_update_check'
+            ]
 
         update_settings = UPDATE_SETTINGS.copy()
         update_settings['prereleases'] = True
         with ctx(update_settings=update_settings) as (wf, c):
             wf.run(update)
-            assert c.cmd == ['/usr/bin/python3', '-m', 'workflow.background', '__workflow_update_check']
+            assert c.cmd == [
+                '/usr/bin/python3', '-m', 'workflow.background',
+                '__workflow_update_check'
+            ]
 
 
 def test_install_update(httpserver, alfred4):
@@ -114,7 +119,10 @@ def fake(wf):
 
             print('Magic update command : {0!r}'.format(c.cmd))
 
-            assert c.cmd == ['/usr/bin/python3', '-m', 'workflow.background', '__workflow_update_install']
+            assert c.cmd == [
+                '/usr/bin/python3', '-m', 'workflow.background',
+                '__workflow_update_install'
+            ]
 
         update_settings = UPDATE_SETTINGS.copy()
         del update_settings['version']
@@ -161,7 +169,10 @@ def fake(wf):
 
             print('Magic update command : {!r}'.format(c.cmd))
 
-            assert c.cmd == ['/usr/bin/python3', '-m', 'workflow.background', '__workflow_update_install']
+            assert c.cmd == [
+                '/usr/bin/python3', '-m', 'workflow.background',
+                '__workflow_update_install'
+            ]
 
         with env(alfred_workflow_version='v10.0-beta'):
             update_settings = UPDATE_SETTINGS.copy()
diff --git a/tests/test_workflow_versions.py b/tests/test_workflow_versions.py
index dc55125..81f0b41 100644
--- a/tests/test_workflow_versions.py
+++ b/tests/test_workflow_versions.py
@@ -7,7 +7,6 @@
 """Unit tests for workflow version determination."""
 
 
-
 import pytest
 
 from workflow.update import Version
diff --git a/tests/test_workflow_xml.py b/tests/test_workflow_xml.py
index 245c534..832bb07 100644
--- a/tests/test_workflow_xml.py
+++ b/tests/test_workflow_xml.py
@@ -11,7 +11,6 @@
 """Unit tests for Workflow's XML feedback generation."""
 
 
-
 from contextlib import contextmanager
 from io import StringIO
 import sys
diff --git a/tests/util.py b/tests/util.py
index ab59cb1..edd8bd0 100644
--- a/tests/util.py
+++ b/tests/util.py
@@ -11,7 +11,6 @@
 """Stuff used in multiple tests."""
 
 
-
 from io import StringIO
 import sys
 import os
diff --git a/tox.ini b/tox.ini
index 9b69742..228267e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -20,8 +20,15 @@ usedevelop = true
 deps =
     -r requirements-test.txt
     coverage
+commands =
+    ./run-tests.sh
 
-commands = ./run-tests.sh
+[testenv:lint]
+usedevelop = true
+deps =
+    -r requirements-test.txt
+commands =
+    ./run-tests.sh -l
 
 [flake8]
 builtins = unicode