diff --git a/Lib/test/regrtest.py b/Lib/test/regrtest.py
index 7a48475..7096de8 100755
--- a/Lib/test/regrtest.py
+++ b/Lib/test/regrtest.py
@@ -1172,6 +1172,9 @@
         return False
 
 
+def post_test_cleanup():
+    test_support.reap_children()
+
 def runtest_inner(test, verbose, quiet, huntrleaks=False, pgo=False, testdir=None):
     test_support.unload(test)
     if verbose:
@@ -1205,6 +1208,7 @@
                     refleak = dash_R(the_module, test, indirect_test,
                         huntrleaks)
                 test_time = time.time() - start_time
+            post_test_cleanup()
         finally:
             sys.stdout = save_stdout
     except test_support.ResourceDenied, msg:
diff --git a/Lib/test/test_tempfile.py b/Lib/test/test_tempfile.py
index 5c85cc9..5c111a2 100644
--- a/Lib/test/test_tempfile.py
+++ b/Lib/test/test_tempfile.py
@@ -141,12 +141,15 @@
         try:
             pid = os.fork()
             if not pid:
+                # child process
                 os.close(read_fd)
                 os.write(write_fd, next(self.r).encode("ascii"))
                 os.close(write_fd)
                 # bypass the normal exit handlers- leave those to
                 # the parent.
                 os._exit(0)
+
+            # parent process
             parent_value = next(self.r)
             child_value = os.read(read_fd, len(parent_value)).decode("ascii")
         finally:
@@ -157,6 +160,10 @@
                     os.kill(pid, signal.SIGKILL)
                 except EnvironmentError:
                     pass
+
+                # Read the process exit status to avoid zombie process
+                os.waitpid(pid, 0)
+
             os.close(read_fd)
             os.close(write_fd)
         self.assertNotEqual(child_value, parent_value)