Index: isodate-0.6.1/setup.py
===================================================================
--- isodate-0.6.1.orig/setup.py
+++ isodate-0.6.1/setup.py
@@ -40,7 +40,6 @@ setup(name='isodate',
 
       # dependencies:
       install_requires=[
-          'six'
       ],
 
       # PyPI metadata
Index: isodate-0.6.1/src/isodate.egg-info/requires.txt
===================================================================
--- isodate-0.6.1.orig/src/isodate.egg-info/requires.txt
+++ isodate-0.6.1/src/isodate.egg-info/requires.txt
@@ -1 +0,0 @@
-six
Index: isodate-0.6.1/src/isodate/isoduration.py
===================================================================
--- isodate-0.6.1.orig/src/isodate/isoduration.py
+++ isodate-0.6.1/src/isodate/isoduration.py
@@ -34,8 +34,6 @@ from datetime import timedelta
 from decimal import Decimal
 import re
 
-from six import string_types
-
 from isodate.duration import Duration
 from isodate.isoerror import ISO8601Error
 from isodate.isodatetime import parse_datetime
@@ -82,7 +80,7 @@ def parse_duration(datestring):
       The alternative format does not support durations with years, months or
       days set to 0.
     """
-    if not isinstance(datestring, string_types):
+    if not isinstance(datestring, str):
         raise TypeError("Expecting a string %r" % datestring)
     match = ISO8601_PERIOD_REGEX.match(datestring)
     if not match:
Index: isodate-0.6.1/src/isodate/tests/test_pickle.py
===================================================================
--- isodate-0.6.1.orig/src/isodate/tests/test_pickle.py
+++ isodate-0.6.1/src/isodate/tests/test_pickle.py
@@ -1,6 +1,6 @@
 import unittest
 
-from six.moves import cPickle as pickle
+import pickle
 
 import isodate