--- a/pytz/tests/test_tzinfo.py~	2019-07-26 08:38:47.000000000 -0500

+++ b/pytz/tests/test_tzinfo.py	2019-07-26 08:40:12.751754602 -0500

@@ -184,8 +184,11 @@

         # Python 3 introduced a new pickle protocol where numbers are stored in

         # hexadecimal representation. Here we extract the pickle

         # representation of the number for the current Python version.

-        old_pickle_pattern = pickle.dumps(tz._utcoffset.seconds)[3:-1]

-        new_pickle_pattern = pickle.dumps(new_utcoffset)[3:-1]

+        #

+        # Test protocol 3 on Python 3 and protocol 0 on Python 2.

+        protocol = (3 if sys.version_info >= (3,) else 0)

+        old_pickle_pattern = pickle.dumps(tz._utcoffset.seconds, protocol)[3:-1]

+        new_pickle_pattern = pickle.dumps(new_utcoffset, protocol)[3:-1]

         hacked_p = p.replace(old_pickle_pattern, new_pickle_pattern)

         self.assertNotEqual(p, hacked_p)