diff --git a/Lib/test/_test_multiprocessing.py b/Lib/test/_test_multiprocessing.py
index d49e9c6..7148ea4 100644
--- a/Lib/test/_test_multiprocessing.py
+++ b/Lib/test/_test_multiprocessing.py
@@ -799,7 +799,8 @@
             q = self.Queue()
             q.put(NotSerializable())
             q.put(True)
-            self.assertTrue(q.get(timeout=0.1))
+            # bpo-30595: use a timeout of 1 second for slow buildbots
+            self.assertTrue(q.get(timeout=1.0))
 
 #
 #