diff --git a/tests/test_streaming.py b/tests/test_streaming.py
index 6f9d18c..0d3ee1f 100644
--- a/tests/test_streaming.py
+++ b/tests/test_streaming.py
@@ -250,7 +250,7 @@ def test_a_quadruple_example(time_quad_ex, ci_env, spawn_backend):
 
     results, diff = time_quad_ex
     assert results
-    this_fast = 6 if platform.system() in ('Windows', 'Darwin') else 2.5
+    this_fast = 6 if platform.system() in ('Windows', 'Darwin') else 2.666
     assert diff < this_fast