diff --git a/Lib/test/test_subprocess.py b/Lib/test/test_subprocess.py
index 4052c5e..a99976a 100644
--- a/Lib/test/test_subprocess.py
+++ b/Lib/test/test_subprocess.py
@@ -56,6 +56,8 @@
             inst.wait()
         subprocess._cleanup()
         self.assertFalse(subprocess._active, "subprocess._active not empty")
+        self.doCleanups()
+        support.reap_children()
 
     def assertStderrEqual(self, stderr, expected, msg=None):
         # In a debug build, stuff like "[6580 refs]" is printed to stderr at