diff --git a/descarteslabs/core/common/threading/tests/test_local.py b/descarteslabs/core/common/threading/tests/test_local.py
index 91444339..f570b60d 100644
--- a/descarteslabs/core/common/threading/tests/test_local.py
+++ b/descarteslabs/core/common/threading/tests/test_local.py
@@ -14,12 +14,15 @@
 
 import multiprocessing
 import os
+import platform
 import sys
 import unittest
 import threading
 
 from ..local import ThreadLocalWrapper
 
+if platform.system() == "Darwin":
+    multiprocessing.set_start_method("fork")
 
 class ThreadLocalWrapperTest(unittest.TestCase):
     def setUp(self):