diff --git a/Lib/test/_test_multiprocessing.py b/Lib/test/_test_multiprocessing.py
index 183e86fd3ab..bd26e3d3f2c 100644
--- a/Lib/test/_test_multiprocessing.py
+++ b/Lib/test/_test_multiprocessing.py
@@ -1721,7 +1721,7 @@ class _TestPool(BaseTestCase):
         self.assertTimingAlmostEqual(get.elapsed, TIMEOUT1)
 
     def test_async_timeout(self):
-        res = self.pool.apply_async(sqr, (6, TIMEOUT2 + 0.2))
+        res = self.pool.apply_async(sqr, (6, TIMEOUT2 + 1.0))
         get = TimingWrapper(res.get)
         self.assertRaises(multiprocessing.TimeoutError, get, timeout=TIMEOUT2)
         self.assertTimingAlmostEqual(get.elapsed, TIMEOUT2)