diff -r b3987d758e49 Lib/test/test_asyncio/test_events.py
--- a/Lib/test/test_asyncio/test_events.py	Tue Feb 18 00:11:21 2014 +0100
+++ b/Lib/test/test_asyncio/test_events.py	Tue Feb 18 00:51:16 2014 +0100
@@ -1622,6 +1622,10 @@ else:
             # kqueue doesn't support character devices (PTY) on Mac OS X older
             # than 10.9 (Maverick)
             @support.requires_mac_ver(10, 9)
+            # Issue #20667: KqueueEventLoopTests.test_read_pty_output()
+            # hangs on OpenBSD 5.4
+            @unittest.skipIf(sys.platform in ('openbsd4', 'openbsd5'),
+                             'test hangs on OpenBSD')
             def test_read_pty_output(self):
                 super().test_read_pty_output()