diff --git a/.github/workflows/test-requirements.txt b/.github/workflows/test-requirements.txt
new file mode 100644
index 00000000..1347173e
--- /dev/null
+++ b/.github/workflows/test-requirements.txt
@@ -0,0 +1,7 @@
+Cython==0.29.10
+aiohttp
+tinys3
+twine
+psutil
+pyOpenSSL==18.0.0
+flake8>=3.7.5
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
new file mode 100644
index 00000000..febdba37
--- /dev/null
+++ b/.github/workflows/tests.yml
@@ -0,0 +1,48 @@
+name: Tests
+
+on:
+  push:
+    branches:
+      - master
+      - ci
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      max-parallel: 4
+      matrix:
+        python-version: [3.6, 3.7]
+        os: [ubuntu-16.04, macos-10.14]
+
+    steps:
+    - uses: actions/checkout@v1
+      with:
+        fetch-depth: 50
+        submodules: true
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v1
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install macOS deps
+      if: matrix.os == 'macos-10.14'
+      run: |
+        brew install gnu-sed
+        brew install --force libtool
+        brew install --force autoconf
+        brew install --force automake
+
+    - name: Install Python Deps
+      run: |
+        pip install --upgrade setuptools pip wheel
+        pip install -U -r .github/workflows/test-requirements.txt
+
+    - name: Test
+      run: |
+        make distclean && make && make test
+        make distclean && make debug && make test
diff --git a/tests/test_base.py b/tests/test_base.py
index 512b0d7a..c063519c 100644
--- a/tests/test_base.py
+++ b/tests/test_base.py
@@ -159,7 +159,7 @@ def cb(inc=10, stop=False):
         self.assertEqual(calls, [10, 1])
         self.assertFalse(self.loop.is_running())
 
-        self.assertLess(finished - started, 0.1)
+        self.assertLess(finished - started, 0.2)
         self.assertGreater(finished - started, 0.04)
 
     def test_call_later_2(self):
@@ -219,9 +219,10 @@ def cb():
             self.assertGreaterEqual(finished - started, 69)
 
     def test_call_at(self):
-        if os.environ.get('TRAVIS_OS_NAME'):
+        if (os.environ.get('TRAVIS_OS_NAME')
+                or os.environ.get('GITHUB_WORKFLOW')):
             # Time seems to be really unpredictable on Travis.
-            raise unittest.SkipTest('time is not monotonic on Travis')
+            raise unittest.SkipTest('time is not monotonic on CI')
 
         i = 0
 
diff --git a/tests/test_process.py b/tests/test_process.py
index aa7def56..e1eb6cc3 100644
--- a/tests/test_process.py
+++ b/tests/test_process.py
@@ -840,7 +840,9 @@ def test_process_delayed_stdio__paused__no_stdin(self):
             })
 
     def test_process_delayed_stdio__not_paused__no_stdin(self):
-        if os.environ.get('TRAVIS_OS_NAME') and sys.platform == 'darwin':
+        if ((os.environ.get('TRAVIS_OS_NAME')
+                or os.environ.get('GITHUB_WORKFLOW'))
+                and sys.platform == 'darwin'):
             # Randomly crashes on Travis, can't reproduce locally.
             raise unittest.SkipTest()