diff --git a/tests/unit/customizations/sso/test_utils.py b/tests/unit/customizations/sso/test_utils.py
index 7a24acee3baf..44ec2a7628ac 100644
--- a/tests/unit/customizations/sso/test_utils.py
+++ b/tests/unit/customizations/sso/test_utils.py
@@ -222,7 +222,7 @@ def setUp(self):
         self.server_thread = threading.Thread(
             target=self.fetcher.get_auth_code_and_state
         )
-        self.server_thread.setDaemon(True)
+        self.server_thread.daemon = True
         self.server_thread.start()
 
     def test_expected_auth_code(self):