diff --git a/Lib/test/test_concurrent_futures/test_deadlock.py b/Lib/test/test_concurrent_futures/test_deadlock.py
index 6be16777568..2f08bf84698 100644
--- a/Lib/test/test_concurrent_futures/test_deadlock.py
+++ b/Lib/test/test_concurrent_futures/test_deadlock.py
@@ -91,7 +91,7 @@ class ErrorAtUnpickle(object):
 
 
 class ExecutorDeadlockTest:
-    TIMEOUT = support.SHORT_TIMEOUT
+    TIMEOUT = support.LONG_TIMEOUT
 
     def _fail_on_deadlock(self, executor):
         # If we did not recover before TIMEOUT seconds, consider that the