diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index afae0a5..cd06b9f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
       - name: Setup python
         uses: actions/setup-python@v2
         with:
-          python: '3.8'
+          python-version: '3.8'
       - name: Install dependencies
         run: pip install -U . --upgrade-strategy eager
       - name: Run MyPy check
diff --git a/tests/conftest.py b/tests/conftest.py
index 24b0f92..a95165e 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -8,6 +8,9 @@ import random
 import signal
 import platform
 import time
+import enum
+
+from typing import Optional
 
 import pytest
 import tractor
@@ -74,11 +77,21 @@ def spawn_backend(request):
     return request.config.option.spawn_backend
 
 
+class CIEnvoirment(enum.Enum):
+    Travis = 'TRAVIS'
+    Github = 'GITHUB'
+
+
 @pytest.fixture(scope='session')
-def travis():
-    """Bool determining whether running inside TravisCI.
+def ci_env() -> Optional[CIEnvoirment]:
+    """Detect CI envoirment.
     """
-    return os.environ.get('TRAVIS', False)
+    if os.environ.get('TRAVIS'):
+        return CIEnvoirment.Travis
+    elif os.environ.get('CI'):
+        return CIEnvoirment.Github
+    else:
+        return None
 
 
 @pytest.fixture(scope='session')
diff --git a/tests/test_streaming.py b/tests/test_streaming.py
index 00b07cb..243ac30 100644
--- a/tests/test_streaming.py
+++ b/tests/test_streaming.py
@@ -9,6 +9,8 @@ import trio
 import tractor
 import pytest
 
+from conftest import CIEnvoirment
+
 
 def test_must_define_ctx():
 
@@ -202,12 +204,15 @@ async def cancel_after(wait):
 
 
 @pytest.fixture(scope='module')
-def time_quad_ex(arb_addr, travis, spawn_backend):
-    if travis and spawn_backend == 'mp' and (platform.system() != 'Windows'):
-        # no idea, but the travis, mp, linux runs are flaking out here often
-        pytest.skip("Test is too flaky on mp in CI")
+def time_quad_ex(arb_addr, ci_env, spawn_backend):
+    if ci_env in (CIEnvoirment.Github, CIEnvoirment.Travis):
+        if spawn_backend == 'mp' and (platform.system() != 'Windows'):
+            """no idea, but the travis and github actions, mp *nix runs are
+            flaking out here often
+            """
+            pytest.skip("Test is too flaky on mp in CI")
 
-    timeout = 7 if platform.system() == 'Windows' else 4
+    timeout = 7 if platform.system() in ('Windows', 'Darwin') else 4
     start = time.time()
     results = tractor.run(cancel_after, timeout, arbiter_addr=arb_addr)
     diff = time.time() - start
@@ -215,12 +220,12 @@ def time_quad_ex(arb_addr, travis, spawn_backend):
     return results, diff
 
 
-def test_a_quadruple_example(time_quad_ex, travis, spawn_backend):
+def test_a_quadruple_example(time_quad_ex, ci_env, spawn_backend):
     """This also serves as a kind of "we'd like to be this fast test"."""
 
     results, diff = time_quad_ex
     assert results
-    this_fast = 6 if platform.system() == 'Windows' else 2.5
+    this_fast = 6 if platform.system() in ('Windows', 'Darwin') else 2.5
     assert diff < this_fast
 
 
@@ -229,7 +234,7 @@ def test_a_quadruple_example(time_quad_ex, travis, spawn_backend):
     list(map(lambda i: i/10, range(3, 9)))
 )
 def test_not_fast_enough_quad(
-    arb_addr, time_quad_ex, cancel_delay, travis, spawn_backend
+    arb_addr, time_quad_ex, cancel_delay, ci_env, spawn_backend
 ):
     """Verify we can cancel midway through the quad example and all actors
     cancel gracefully.