diff --git a/.travis.yml b/.travis.yml
index 44a11fa..1736c1f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,7 @@ env:
 python:
   - 2.6
   - 2.7
+  - 3.3
   - pypy
 install: 
   - pip install PyYAML pytest --use-mirrors
diff --git a/README.md b/README.md
index 2317eaa..1acddf1 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ to do is delete your existing cassette files, and run your tests again.
 All of the mocked responses will be updated with the new API.
 
 ## Compatibility Notes
-This should work with Python 2.6 and 2.7, and [pypy](http://pypy.org).
+VCR.py officially supports Python 2.6 and 2.7, 3.3, and [pypy](http://pypy.org).
 
 Currently I've only tested this with urllib2, urllib3, and requests.  It's known to *NOT WORK* with urllib.
 
diff --git a/setup.py b/setup.py
index 1f1689e..3f91ef8 100644
--- a/setup.py
+++ b/setup.py
@@ -37,7 +37,7 @@ setup(name='vcrpy',
         'vcr.compat': 'vcr/compat',
         'vcr.persisters': 'vcr/persisters',
       },
-      install_requires=['PyYAML','contextdecorator'],
+      install_requires=['PyYAML','contextdecorator','six'],
       license='MIT',
       tests_require=['pytest','mock'],
       cmdclass={'test': PyTest},
@@ -46,6 +46,7 @@ setup(name='vcrpy',
           'Environment :: Console',
           'Intended Audience :: Developers',
           'Programming Language :: Python',
+	  'Programming Language :: Python :: 3',
           'Topic :: Software Development :: Testing',
           'Topic :: Internet :: WWW/HTTP',
           'License :: OSI Approved :: MIT License',
diff --git a/tests/assertions.py b/tests/assertions.py
index d107c09..793298d 100644
--- a/tests/assertions.py
+++ b/tests/assertions.py
@@ -13,7 +13,7 @@ def assert_cassette_has_one_response(cass):
 
 def assert_is_json(a_string):
     try:
-        json.loads(a_string)
+        json.loads(a_string.decode('utf-8'))
     except Exception:
         assert False
     assert True
diff --git a/tests/integration/test_basic.py b/tests/integration/test_basic.py
index 96a8a89..8728a13 100644
--- a/tests/integration/test_basic.py
+++ b/tests/integration/test_basic.py
@@ -3,10 +3,10 @@
 
 # External imports
 import os
-import urllib2
 
 # Internal imports
 import vcr
+from vcr._compat import urlopen
 
 
 def test_nonexistent_directory(tmpdir):
@@ -16,7 +16,7 @@ def test_nonexistent_directory(tmpdir):
 
     # Run VCR to create dir and cassette file
     with vcr.use_cassette(str(tmpdir.join('nonexistent', 'cassette.yml'))):
-        urllib2.urlopen('http://httpbin.org/').read()
+        urlopen('http://httpbin.org/').read()
 
     # This should have made the file and the directory
     assert os.path.exists(str(tmpdir.join('nonexistent', 'cassette.yml')))
@@ -25,11 +25,11 @@ def test_nonexistent_directory(tmpdir):
 def test_unpatch(tmpdir):
     '''Ensure that our cassette gets unpatched when we're done'''
     with vcr.use_cassette(str(tmpdir.join('unpatch.yaml'))) as cass:
-        urllib2.urlopen('http://httpbin.org/').read()
+        urlopen('http://httpbin.org/').read()
 
     # Make the same request, and assert that we haven't served any more
     # requests out of cache
-    urllib2.urlopen('http://httpbin.org/').read()
+    urlopen('http://httpbin.org/').read()
     assert cass.play_count == 0
 
 
@@ -38,10 +38,10 @@ def test_basic_use(tmpdir):
     Copied from the docs
     '''
     with vcr.use_cassette('fixtures/vcr_cassettes/synopsis.yaml'):
-        response = urllib2.urlopen(
+        response = urlopen(
             'http://www.iana.org/domains/reserved'
         ).read()
-        assert 'Example domains' in response
+        assert b'Example domains' in response
 
 
 def test_basic_json_use(tmpdir):
@@ -50,8 +50,8 @@ def test_basic_json_use(tmpdir):
     '''
     test_fixture = 'fixtures/vcr_cassettes/synopsis.json'
     with vcr.use_cassette(test_fixture, serializer='json'):
-        response = urllib2.urlopen('http://httpbin.org/').read()
-        assert 'difficult sometimes' in response
+        response = urlopen('http://httpbin.org/').read()
+        assert b'difficult sometimes' in response
 
 
 def test_patched_content(tmpdir):
@@ -60,16 +60,16 @@ def test_patched_content(tmpdir):
     request
     '''
     with vcr.use_cassette(str(tmpdir.join('synopsis.yaml'))) as cass:
-        response = urllib2.urlopen('http://httpbin.org/').read()
+        response = urlopen('http://httpbin.org/').read()
         assert cass.play_count == 0
 
     with vcr.use_cassette(str(tmpdir.join('synopsis.yaml'))) as cass:
-        response2 = urllib2.urlopen('http://httpbin.org/').read()
+        response2 = urlopen('http://httpbin.org/').read()
         assert cass.play_count == 1
         cass._save(force=True)
 
     with vcr.use_cassette(str(tmpdir.join('synopsis.yaml'))) as cass:
-        response3 = urllib2.urlopen('http://httpbin.org/').read()
+        response3 = urlopen('http://httpbin.org/').read()
         assert cass.play_count == 1
 
     assert response == response2
@@ -85,16 +85,16 @@ def test_patched_content_json(tmpdir):
     testfile = str(tmpdir.join('synopsis.json'))
 
     with vcr.use_cassette(testfile) as cass:
-        response = urllib2.urlopen('http://httpbin.org/').read()
+        response = urlopen('http://httpbin.org/').read()
         assert cass.play_count == 0
 
     with vcr.use_cassette(testfile) as cass:
-        response2 = urllib2.urlopen('http://httpbin.org/').read()
+        response2 = urlopen('http://httpbin.org/').read()
         assert cass.play_count == 1
         cass._save(force=True)
 
     with vcr.use_cassette(testfile) as cass:
-        response3 = urllib2.urlopen('http://httpbin.org/').read()
+        response3 = urlopen('http://httpbin.org/').read()
         assert cass.play_count == 1
 
     assert response == response2
diff --git a/tests/integration/test_config.py b/tests/integration/test_config.py
index 898b0f7..6b3f4c2 100644
--- a/tests/integration/test_config.py
+++ b/tests/integration/test_config.py
@@ -1,8 +1,8 @@
 import os
 import json
-import urllib2
 import pytest
 import vcr
+from vcr._compat import urlopen
 
 
 def test_set_serializer_default_config(tmpdir):
@@ -10,7 +10,7 @@ def test_set_serializer_default_config(tmpdir):
 
     with my_vcr.use_cassette(str(tmpdir.join('test.json'))):
         assert my_vcr.serializer == 'json'
-        urllib2.urlopen('http://httpbin.org/get')
+        urlopen('http://httpbin.org/get')
 
     with open(str(tmpdir.join('test.json'))) as f:
         assert json.loads(f.read())
@@ -20,7 +20,7 @@ def test_default_set_cassette_library_dir(tmpdir):
     my_vcr = vcr.VCR(cassette_library_dir=str(tmpdir.join('subdir')))
 
     with my_vcr.use_cassette('test.json'):
-        urllib2.urlopen('http://httpbin.org/get')
+        urlopen('http://httpbin.org/get')
 
     assert os.path.exists(str(tmpdir.join('subdir').join('test.json')))
 
@@ -31,7 +31,7 @@ def test_override_set_cassette_library_dir(tmpdir):
     cld = str(tmpdir.join('subdir2'))
 
     with my_vcr.use_cassette('test.json', cassette_library_dir=cld):
-        urllib2.urlopen('http://httpbin.org/get')
+        urlopen('http://httpbin.org/get')
 
     assert os.path.exists(str(tmpdir.join('subdir2').join('test.json')))
     assert not os.path.exists(str(tmpdir.join('subdir').join('test.json')))
@@ -41,10 +41,10 @@ def test_override_match_on(tmpdir):
     my_vcr = vcr.VCR(match_on=['method'])
 
     with my_vcr.use_cassette(str(tmpdir.join('test.json'))):
-        urllib2.urlopen('http://httpbin.org/')
+        urlopen('http://httpbin.org/')
 
     with my_vcr.use_cassette(str(tmpdir.join('test.json'))) as cass:
-        urllib2.urlopen('http://httpbin.org/get')
+        urlopen('http://httpbin.org/get')
 
     assert len(cass) == 1
     assert cass.play_count == 1
diff --git a/tests/integration/test_disksaver.py b/tests/integration/test_disksaver.py
index c0a4c3a..534b1e9 100644
--- a/tests/integration/test_disksaver.py
+++ b/tests/integration/test_disksaver.py
@@ -3,11 +3,11 @@
 
 # External imports
 import os
-import urllib2
 import time
 
 # Internal imports
 import vcr
+from vcr._compat import urlopen
 
 
 def test_disk_saver_nowrite(tmpdir):
@@ -17,12 +17,12 @@ def test_disk_saver_nowrite(tmpdir):
     '''
     fname = str(tmpdir.join('synopsis.yaml'))
     with vcr.use_cassette(fname) as cass:
-        urllib2.urlopen('http://www.iana.org/domains/reserved').read()
+        urlopen('http://www.iana.org/domains/reserved').read()
         assert cass.play_count == 0
     last_mod = os.path.getmtime(fname)
 
     with vcr.use_cassette(fname) as cass:
-        urllib2.urlopen('http://www.iana.org/domains/reserved').read()
+        urlopen('http://www.iana.org/domains/reserved').read()
         assert cass.play_count == 1
         assert cass.dirty is False
     last_mod2 = os.path.getmtime(fname)
@@ -37,7 +37,7 @@ def test_disk_saver_write(tmpdir):
     '''
     fname = str(tmpdir.join('synopsis.yaml'))
     with vcr.use_cassette(fname) as cass:
-        urllib2.urlopen('http://www.iana.org/domains/reserved').read()
+        urlopen('http://www.iana.org/domains/reserved').read()
         assert cass.play_count == 0
     last_mod = os.path.getmtime(fname)
 
@@ -46,8 +46,8 @@ def test_disk_saver_write(tmpdir):
     time.sleep(1)
 
     with vcr.use_cassette(fname, record_mode='any') as cass:
-        urllib2.urlopen('http://www.iana.org/domains/reserved').read()
-        urllib2.urlopen('http://httpbin.org/').read()
+        urlopen('http://www.iana.org/domains/reserved').read()
+        urlopen('http://httpbin.org/').read()
         assert cass.play_count == 1
         assert cass.dirty
     last_mod2 = os.path.getmtime(fname)
diff --git a/tests/integration/test_multiple.py b/tests/integration/test_multiple.py
index 7871585..9458093 100644
--- a/tests/integration/test_multiple.py
+++ b/tests/integration/test_multiple.py
@@ -1,6 +1,6 @@
 import pytest
-from urllib2 import urlopen
 import vcr
+from vcr._compat import urlopen
 
 
 def test_making_extra_request_raises_exception(tmpdir):
diff --git a/tests/integration/test_record_mode.py b/tests/integration/test_record_mode.py
index a3d69f1..9e63b1e 100644
--- a/tests/integration/test_record_mode.py
+++ b/tests/integration/test_record_mode.py
@@ -1,46 +1,46 @@
 import os
-import urllib2
 import pytest
 import vcr
+from vcr._compat import urlopen
 
 
 def test_once_record_mode(tmpdir):
     testfile = str(tmpdir.join('recordmode.yml'))
     with vcr.use_cassette(testfile, record_mode="once"):
         # cassette file doesn't exist, so create.
-        response = urllib2.urlopen('http://httpbin.org/').read()
+        response = urlopen('http://httpbin.org/').read()
 
     with vcr.use_cassette(testfile, record_mode="once") as cass:
         # make the same request again
-        response = urllib2.urlopen('http://httpbin.org/').read()
+        response = urlopen('http://httpbin.org/').read()
 
         # the first time, it's played from the cassette.
         # but, try to access something else from the same cassette, and an
         # exception is raised.
         with pytest.raises(Exception):
-            response = urllib2.urlopen('http://httpbin.org/get').read()
+            response = urlopen('http://httpbin.org/get').read()
 
 
 def test_once_record_mode_two_times(tmpdir):
     testfile = str(tmpdir.join('recordmode.yml'))
     with vcr.use_cassette(testfile, record_mode="once"):
         # get two of the same file
-        response1 = urllib2.urlopen('http://httpbin.org/').read()
-        response2 = urllib2.urlopen('http://httpbin.org/').read()
+        response1 = urlopen('http://httpbin.org/').read()
+        response2 = urlopen('http://httpbin.org/').read()
 
     with vcr.use_cassette(testfile, record_mode="once") as cass:
         # do it again
-        response = urllib2.urlopen('http://httpbin.org/').read()
-        response = urllib2.urlopen('http://httpbin.org/').read()
+        response = urlopen('http://httpbin.org/').read()
+        response = urlopen('http://httpbin.org/').read()
 
 
 def test_once_mode_three_times(tmpdir):
     testfile = str(tmpdir.join('recordmode.yml'))
     with vcr.use_cassette(testfile, record_mode="once"):
         # get three of the same file
-        response1 = urllib2.urlopen('http://httpbin.org/').read()
-        response2 = urllib2.urlopen('http://httpbin.org/').read()
-        response2 = urllib2.urlopen('http://httpbin.org/').read()
+        response1 = urlopen('http://httpbin.org/').read()
+        response2 = urlopen('http://httpbin.org/').read()
+        response2 = urlopen('http://httpbin.org/').read()
 
 
 def test_new_episodes_record_mode(tmpdir):
@@ -48,15 +48,15 @@ def test_new_episodes_record_mode(tmpdir):
 
     with vcr.use_cassette(testfile, record_mode="new_episodes"):
         # cassette file doesn't exist, so create.
-        response = urllib2.urlopen('http://httpbin.org/').read()
+        response = urlopen('http://httpbin.org/').read()
 
     with vcr.use_cassette(testfile, record_mode="new_episodes") as cass:
         # make the same request again
-        response = urllib2.urlopen('http://httpbin.org/').read()
+        response = urlopen('http://httpbin.org/').read()
 
         # in the "new_episodes" record mode, we can add more requests to
         # a cassette without repurcussions.
-        response = urllib2.urlopen('http://httpbin.org/get').read()
+        response = urlopen('http://httpbin.org/get').read()
 
         # the first interaction was not re-recorded, but the second was added
         assert cass.play_count == 1
@@ -67,15 +67,15 @@ def test_all_record_mode(tmpdir):
 
     with vcr.use_cassette(testfile, record_mode="all"):
         # cassette file doesn't exist, so create.
-        response = urllib2.urlopen('http://httpbin.org/').read()
+        response = urlopen('http://httpbin.org/').read()
 
     with vcr.use_cassette(testfile, record_mode="all") as cass:
         # make the same request again
-        response = urllib2.urlopen('http://httpbin.org/').read()
+        response = urlopen('http://httpbin.org/').read()
 
         # in the "all" record mode, we can add more requests to
         # a cassette without repurcussions.
-        response = urllib2.urlopen('http://httpbin.org/get').read()
+        response = urlopen('http://httpbin.org/get').read()
 
         # The cassette was never actually played, even though it existed.
         # that's because, in "all" mode, the requests all go directly to
@@ -89,7 +89,7 @@ def test_none_record_mode(tmpdir):
     testfile = str(tmpdir.join('recordmode.yml'))
     with vcr.use_cassette(testfile, record_mode="none"):
         with pytest.raises(Exception):
-            response = urllib2.urlopen('http://httpbin.org/').read()
+            response = urlopen('http://httpbin.org/').read()
 
 
 def test_none_record_mode_with_existing_cassette(tmpdir):
@@ -97,12 +97,12 @@ def test_none_record_mode_with_existing_cassette(tmpdir):
     testfile = str(tmpdir.join('recordmode.yml'))
 
     with vcr.use_cassette(testfile, record_mode="all"):
-        response = urllib2.urlopen('http://httpbin.org/').read()
+        response = urlopen('http://httpbin.org/').read()
 
     # play from cassette file
     with vcr.use_cassette(testfile, record_mode="none") as cass:
-        response = urllib2.urlopen('http://httpbin.org/').read()
+        response = urlopen('http://httpbin.org/').read()
         assert cass.play_count == 1
         # but if I try to hit the net, raise an exception.
         with pytest.raises(Exception):
-            response = urllib2.urlopen('http://httpbin.org/get').read()
+            response = urlopen('http://httpbin.org/get').read()
diff --git a/tests/integration/test_register_matcher.py b/tests/integration/test_register_matcher.py
index 573dbf3..c1e11a3 100644
--- a/tests/integration/test_register_matcher.py
+++ b/tests/integration/test_register_matcher.py
@@ -1,5 +1,5 @@
-import urllib2
 import vcr
+from vcr._compat import urlopen
 
 
 def true_matcher(r1, r2):
@@ -16,13 +16,13 @@ def test_registered_serializer_true_matcher(tmpdir):
     testfile = str(tmpdir.join('test.yml'))
     with my_vcr.use_cassette(testfile, match_on=['true']) as cass:
         # These 2 different urls are stored as the same request
-        urllib2.urlopen('http://httpbin.org/')
-        urllib2.urlopen('https://httpbin.org/get')
+        urlopen('http://httpbin.org/')
+        urlopen('https://httpbin.org/get')
 
     with my_vcr.use_cassette(testfile, match_on=['true']) as cass:
         # I can get the response twice even though I only asked for it once
-        urllib2.urlopen('http://httpbin.org/get')
-        urllib2.urlopen('https://httpbin.org/get')
+        urlopen('http://httpbin.org/get')
+        urlopen('https://httpbin.org/get')
 
 
 def test_registered_serializer_false_matcher(tmpdir):
@@ -31,6 +31,6 @@ def test_registered_serializer_false_matcher(tmpdir):
     testfile = str(tmpdir.join('test.yml'))
     with my_vcr.use_cassette(testfile, match_on=['false']) as cass:
         # These 2 different urls are stored as different requests
-        urllib2.urlopen('http://httpbin.org/')
-        urllib2.urlopen('https://httpbin.org/get')
+        urlopen('http://httpbin.org/')
+        urlopen('https://httpbin.org/get')
         assert len(cass) == 2
diff --git a/tests/integration/test_register_serializer.py b/tests/integration/test_register_serializer.py
index b3123ae..8e121f8 100644
--- a/tests/integration/test_register_serializer.py
+++ b/tests/integration/test_register_serializer.py
@@ -1,4 +1,3 @@
-import urllib2
 import vcr
 
 
diff --git a/tests/integration/test_request.py b/tests/integration/test_request.py
index a5dc5e3..0dbc47b 100644
--- a/tests/integration/test_request.py
+++ b/tests/integration/test_request.py
@@ -1,11 +1,11 @@
-import urllib2
 import vcr
+from vcr._compat import urlopen
 
 
 def test_recorded_request_url_with_redirected_request(tmpdir):
     with vcr.use_cassette(str(tmpdir.join('test.yml'))) as cass:
         assert len(cass) == 0
-        urllib2.urlopen('http://httpbin.org/redirect/3')
+        urlopen('http://httpbin.org/redirect/3')
         assert cass.requests[0].url == 'http://httpbin.org/redirect/3'
         assert cass.requests[3].url == 'http://httpbin.org/get'
         assert len(cass) == 4
diff --git a/tests/integration/test_urllib2.py b/tests/integration/test_urllib2.py
index 5db1b63..d218796 100644
--- a/tests/integration/test_urllib2.py
+++ b/tests/integration/test_urllib2.py
@@ -3,12 +3,12 @@
 
 # External imports
 import os
-import urllib2
-from urllib import urlencode
+
 import pytest
 
 # Internal imports
 import vcr
+from vcr._compat import urlopen, urlencode
 
 from assertions import assert_cassette_empty, assert_cassette_has_one_response
 
@@ -25,30 +25,30 @@ def test_response_code(scheme, tmpdir):
     '''Ensure we can read a response code from a fetch'''
     url = scheme + '://httpbin.org/'
     with vcr.use_cassette(str(tmpdir.join('atts.yaml'))) as cass:
-        code = urllib2.urlopen(url).getcode()
+        code = urlopen(url).getcode()
 
     with vcr.use_cassette(str(tmpdir.join('atts.yaml'))) as cass:
-        assert code == urllib2.urlopen(url).getcode()
+        assert code == urlopen(url).getcode()
 
 
 def test_random_body(scheme, tmpdir):
     '''Ensure we can read the content, and that it's served from cache'''
     url = scheme + '://httpbin.org/bytes/1024'
     with vcr.use_cassette(str(tmpdir.join('body.yaml'))) as cass:
-        body = urllib2.urlopen(url).read()
+        body = urlopen(url).read()
 
     with vcr.use_cassette(str(tmpdir.join('body.yaml'))) as cass:
-        assert body == urllib2.urlopen(url).read()
+        assert body == urlopen(url).read()
 
 
 def test_response_headers(scheme, tmpdir):
     '''Ensure we can get information from the response'''
     url = scheme + '://httpbin.org/'
     with vcr.use_cassette(str(tmpdir.join('headers.yaml'))) as cass:
-        open1 = urllib2.urlopen(url).info().items()
+        open1 = urlopen(url).info().items()
 
     with vcr.use_cassette(str(tmpdir.join('headers.yaml'))) as cass:
-        open2 = urllib2.urlopen(url).info().items()
+        open2 = urlopen(url).info().items()
         assert open1 == open2
 
 
@@ -61,7 +61,7 @@ def test_multiple_requests(scheme, tmpdir):
         scheme + '://httpbin.org/bytes/1024'
     ]
     with vcr.use_cassette(str(tmpdir.join('multiple.yaml'))) as cass:
-        map(urllib2.urlopen, urls)
+        [urlopen(url) for url in urls]
     assert len(cass) == len(urls)
 
 
@@ -70,23 +70,23 @@ def test_get_data(scheme, tmpdir):
     data = urlencode({'some': 1, 'data': 'here'})
     url = scheme + '://httpbin.org/get?' + data
     with vcr.use_cassette(str(tmpdir.join('get_data.yaml'))) as cass:
-        res1 = urllib2.urlopen(url).read()
+        res1 = urlopen(url).read()
 
     with vcr.use_cassette(str(tmpdir.join('get_data.yaml'))) as cass:
-        res2 = urllib2.urlopen(url).read()
+        res2 = urlopen(url).read()
 
     assert res1 == res2
 
 
 def test_post_data(scheme, tmpdir):
     '''Ensure that it works when posting data'''
-    data = urlencode({'some': 1, 'data': 'here'})
+    data = urlencode({'some': 1, 'data': 'here'}).encode('utf-8')
     url = scheme + '://httpbin.org/post'
     with vcr.use_cassette(str(tmpdir.join('post_data.yaml'))) as cass:
-        res1 = urllib2.urlopen(url, data).read()
+        res1 = urlopen(url, data).read()
 
     with vcr.use_cassette(str(tmpdir.join('post_data.yaml'))) as cass:
-        res2 = urllib2.urlopen(url, data).read()
+        res2 = urlopen(url, data).read()
 
     assert res1 == res2
     assert_cassette_has_one_response(cass)
@@ -94,12 +94,12 @@ def test_post_data(scheme, tmpdir):
 
 def test_post_unicode_data(scheme, tmpdir):
     '''Ensure that it works when posting unicode data'''
-    data = urlencode({'snowman': u'☃'.encode('utf-8')})
+    data = urlencode({'snowman': u'☃'.encode('utf-8')}).encode('utf-8')
     url = scheme + '://httpbin.org/post'
     with vcr.use_cassette(str(tmpdir.join('post_data.yaml'))) as cass:
-        res1 = urllib2.urlopen(url, data).read()
+        res1 = urlopen(url, data).read()
     with vcr.use_cassette(str(tmpdir.join('post_data.yaml'))) as cass:
-        res2 = urllib2.urlopen(url, data).read()
+        res2 = urlopen(url, data).read()
     assert res1 == res2
     assert_cassette_has_one_response(cass)
 
@@ -110,8 +110,8 @@ def test_cross_scheme(tmpdir):
     # ensure that we haven't served anything out of cache, and we have two
     # requests / response pairs in the cassette
     with vcr.use_cassette(str(tmpdir.join('cross_scheme.yaml'))) as cass:
-        urllib2.urlopen('https://httpbin.org/')
-        urllib2.urlopen('http://httpbin.org/')
+        urlopen('https://httpbin.org/')
+        urlopen('http://httpbin.org/')
         assert len(cass) == 2
         assert cass.play_count == 0
 
@@ -121,10 +121,10 @@ def test_decorator(scheme, tmpdir):
 
     @vcr.use_cassette(str(tmpdir.join('atts.yaml')))
     def inner1():
-        return urllib2.urlopen(url).getcode()
+        return urlopen(url).getcode()
 
     @vcr.use_cassette(str(tmpdir.join('atts.yaml')))
     def inner2():
-        return urllib2.urlopen(url).getcode()
+        return urlopen(url).getcode()
 
     assert inner1() == inner2()
diff --git a/tests/integration/test_wild.py b/tests/integration/test_wild.py
index 0c4c2d9..6b80456 100644
--- a/tests/integration/test_wild.py
+++ b/tests/integration/test_wild.py
@@ -3,7 +3,10 @@ requests = pytest.importorskip("requests")
 
 import vcr
 
-import httplib
+try:
+    import httplib
+except ImportError:
+    import http.client as httplib
 
 
 def test_domain_redirect():
diff --git a/tox.ini b/tox.ini
index 09ef9fd..79eba13 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@
 # and then run "tox" from this directory.
 
 [tox]
-envlist = py26, py27, pypy, py26requests, py27requests, pypyrequests, py26oldrequests, py27oldrequests, pypyoldrequests, py26httplib2, py27httplib2, pypyhttplib2
+envlist = py26, py27, py33, pypy, py26requests, py27requests, pypyrequests, py26oldrequests, py27oldrequests, pypyoldrequests, py26httplib2, py27httplib2, pypyhttplib2
 
 [testenv]
 commands =
@@ -38,6 +38,14 @@ deps =
     PyYAML
     requests==1.2.3
 
+[testenv:py33oldrequests]
+basepython = python3.3
+deps =
+    mock
+    pytest
+    PyYAML
+    requests==1.2.3
+
 [testenv:py26requests]
 basepython = python2.6
 deps =
@@ -54,6 +62,14 @@ deps =
     PyYAML
     requests
 
+[testenv:py33requests]
+basepython = python3.3
+deps =
+    mock
+    pytest
+    PyYAML
+    requests
+
 [testenv:pypyrequests]
 basepython = pypy
 deps =
diff --git a/vcr/__init__.py b/vcr/__init__.py
index 7fbb0b6..742254d 100644
--- a/vcr/__init__.py
+++ b/vcr/__init__.py
@@ -1,4 +1,4 @@
-from config import VCR
+from .config import VCR
 
 default_vcr = VCR()
 
diff --git a/vcr/_compat.py b/vcr/_compat.py
new file mode 100644
index 0000000..769fe4e
--- /dev/null
+++ b/vcr/_compat.py
@@ -0,0 +1,9 @@
+try:
+    import httplib
+    from urllib2 import urlopen
+    from urllib import urlencode
+except ImportError:
+    import http.client as httplib
+    from urllib.request import urlopen
+    from urllib.parse import urlencode
+
diff --git a/vcr/cassette.py b/vcr/cassette.py
index 7b6f8a2..760ca73 100644
--- a/vcr/cassette.py
+++ b/vcr/cassette.py
@@ -67,7 +67,7 @@ class Cassette(ContextDecorator):
     def play_response(self, request):
         '''
         Get the response corresponding to a request, but only if it
-        hasn't been played back before, and mark it as playe.d
+        hasn't been played back before, and mark it as played
         '''
         for index, (stored_request, response) in enumerate(self.data):
             if requests_match(request, stored_request, self._match_on):
diff --git a/vcr/config.py b/vcr/config.py
index d8dd347..f262782 100644
--- a/vcr/config.py
+++ b/vcr/config.py
@@ -32,18 +32,21 @@ class VCR(object):
         try:
             serializer = self.serializers[serializer_name]
         except KeyError:
-            print "Serializer {0} doesn't exist or isn't registered".format(
+            print("Serializer {0} doesn't exist or isn't registered".format(
                 serializer_name
-            )
+            ))
             raise KeyError
         return serializer
 
     def _get_matchers(self, matcher_names):
+        matchers = []
         try:
-            matchers = [self.matchers[m] for m in matcher_names]
+            for m in matcher_names:
+                matchers.append(self.matchers[m])
         except KeyError:
             raise KeyError(
-                "Matcher {0} doesn't exist or isn't registered".format(m)
+                "Matcher {0} doesn't exist or isn't registered".format(
+                    m)
             )
         return matchers
 
diff --git a/vcr/patch.py b/vcr/patch.py
index f8f74b7..e5250f6 100644
--- a/vcr/patch.py
+++ b/vcr/patch.py
@@ -1,7 +1,7 @@
 '''Utilities for patching in cassettes'''
 
-import httplib
 from .stubs import VCRHTTPConnection, VCRHTTPSConnection
+from vcr._compat import httplib
 
 
 # Save some of the original types for the purposes of unpatching
@@ -40,9 +40,8 @@ def install(cassette):
     This replaces the actual HTTPConnection with a VCRHTTPConnection
     object which knows how to save to / read from cassettes
     """
-    httplib.HTTPConnection = httplib.HTTP._connection_class = VCRHTTPConnection
-    httplib.HTTPSConnection = httplib.HTTPS._connection_class = (
-        VCRHTTPSConnection)
+    httplib.HTTPConnection = VCRHTTPConnection
+    httplib.HTTPSConnection = VCRHTTPSConnection
     httplib.HTTPConnection.cassette = cassette
     httplib.HTTPSConnection.cassette = cassette
 
@@ -90,9 +89,8 @@ def install(cassette):
 
 def reset():
     '''Undo all the patching'''
-    httplib.HTTPConnection = httplib.HTTP._connection_class = _HTTPConnection
-    httplib.HTTPSConnection = httplib.HTTPS._connection_class = \
-        _HTTPSConnection
+    httplib.HTTPConnection = _HTTPConnection
+    httplib.HTTPSConnection = _HTTPSConnection
     try:
         import requests.packages.urllib3.connectionpool as cpool
         # unpatch requests v1.x
diff --git a/vcr/serializers/compat.py b/vcr/serializers/compat.py
new file mode 100644
index 0000000..d77dade
--- /dev/null
+++ b/vcr/serializers/compat.py
@@ -0,0 +1,66 @@
+import six
+
+def convert_to_bytes(resp):
+    resp = convert_headers_to_bytes(resp)
+    resp = convert_body_to_bytes(resp)
+    return resp
+
+def convert_to_unicode(resp):
+    resp = convert_headers_to_unicode(resp)
+    resp = convert_body_to_unicode(resp)
+    return resp
+
+def convert_headers_to_bytes(resp):
+    try:
+        resp['headers'] = [h.encode('utf-8') for h in resp['headers']]
+    except (KeyError, TypeError):
+        pass
+    return resp
+
+def convert_headers_to_unicode(resp):
+    try:
+        resp['headers'] = [h.decode('utf-8') for h in resp['headers']]
+    except (KeyError, TypeError):
+        pass
+    return resp
+
+def convert_body_to_bytes(resp):
+    """
+    If the request body is a string, encode it to bytes (for python3 support)
+
+    By default yaml serializes to utf-8 encoded bytestrings.
+    When this cassette is loaded by python3, it's automatically decoded
+    into unicode strings.  This makes sure that it stays a bytestring, since
+    that's what all the internal httplib machinery is expecting.
+
+    For more info on py3 yaml: http://pyyaml.org/wiki/PyYAMLDocumentation#Python3support
+    """
+    try:
+        if not isinstance(resp['body']['string'], six.binary_type):
+            resp['body']['string'] = resp['body']['string'].encode('utf-8')
+    except (KeyError, TypeError, UnicodeEncodeError):
+        # The thing we were converting either wasn't a dictionary or didn't have
+	# the keys we were expecting.  Some of the tests just serialize and
+	# deserialize a string.
+
+	# Also, sometimes the thing actually is binary, so if you can't encode
+	# it, just give up.
+        pass
+    return resp
+
+def convert_body_to_unicode(resp):
+    """
+    If the request body is bytes, decode it to a string (for python3 support)
+    """
+    try:
+        if not isinstance(resp['body']['string'], six.text_type):
+            resp['body']['string'] = resp['body']['string'].decode('utf-8')
+    except (KeyError, TypeError, UnicodeDecodeError):
+        # The thing we were converting either wasn't a dictionary or didn't have
+	# the keys we were expecting.  Some of the tests just serialize and
+	# deserialize a string.
+
+	# Also, sometimes the thing actually is binary, so if you can't decode
+	# it, just give up.
+        pass
+    return resp
diff --git a/vcr/serializers/jsonserializer.py b/vcr/serializers/jsonserializer.py
index 831d600..d10a138 100644
--- a/vcr/serializers/jsonserializer.py
+++ b/vcr/serializers/jsonserializer.py
@@ -1,4 +1,5 @@
 from vcr.request import Request
+from . import compat
 try:
     import simplejson as json
 except ImportError:
@@ -11,22 +12,17 @@ def _json_default(obj):
     return obj
 
 
-def _fix_response_unicode(d):
-    d['body']['string'] = d['body']['string'].encode('utf-8')
-    return d
-
-
 def deserialize(cassette_string):
     data = json.loads(cassette_string)
     requests = [Request._from_dict(r['request']) for r in data]
-    responses = [_fix_response_unicode(r['response']) for r in data]
+    responses = [compat.convert_to_bytes(r['response']) for r in data]
     return requests, responses
 
 
 def serialize(cassette_dict):
     data = ([{
         'request': request._to_dict(),
-        'response': response,
+        'response': compat.convert_to_unicode(response),
     } for request, response in zip(
         cassette_dict['requests'],
         cassette_dict['responses']
diff --git a/vcr/serializers/yamlserializer.py b/vcr/serializers/yamlserializer.py
index 002d31d..da6db88 100644
--- a/vcr/serializers/yamlserializer.py
+++ b/vcr/serializers/yamlserializer.py
@@ -1,4 +1,6 @@
+import sys
 import yaml
+from . import compat
 
 # Use the libYAML versions if possible
 try:
@@ -6,11 +8,38 @@ try:
 except ImportError:
     from yaml import Loader, Dumper
 
+"""
+Just a general note on the serialization philosophy here:
+I prefer cassettes to be human-readable if possible.  Yaml serializes
+bytestrings to !!binary, which isn't readable, so I would like to serialize to
+strings and from strings, which yaml will encode as utf-8 automatically.
+All the internal HTTP stuff expects bytestrings, so this whole serialization
+process feels backwards.
+
+Serializing: bytestring -> string (yaml persists to utf-8)
+Deserializing: string (yaml converts from utf-8) -> bytestring
+"""
+
+def _restore_frozenset():
+    """
+    Restore __builtin__.frozenset for cassettes serialized in python2 but 
+    deserialized in python3 and builtins.frozenset for cassettes serialized
+    in python3 and deserialized in python2
+    """
+
+    if '__builtin__' not in sys.modules:
+        import builtins
+        sys.modules['__builtin__'] = builtins
+
+    if 'builtins' not in sys.modules:
+        sys.modules['builtins'] = sys.modules['__builtin__']
 
 def deserialize(cassette_string):
+    _restore_frozenset()
     data = yaml.load(cassette_string, Loader=Loader)
     requests = [r['request'] for r in data]
     responses = [r['response'] for r in data]
+    responses = [compat.convert_to_bytes(r['response']) for r in data]
     return requests, responses
 
 
@@ -20,6 +49,6 @@ def serialize(cassette_dict):
         'response': response,
     } for request, response in zip(
         cassette_dict['requests'],
-        cassette_dict['responses']
+        [compat.convert_to_unicode(r) for r in cassette_dict['responses']],
     )])
     return yaml.dump(data, Dumper=Dumper)
diff --git a/vcr/stubs/__init__.py b/vcr/stubs/__init__.py
index 4fc0266..42d93df 100644
--- a/vcr/stubs/__init__.py
+++ b/vcr/stubs/__init__.py
@@ -1,10 +1,15 @@
 '''Stubs for patching HTTP and HTTPS requests'''
 
-from httplib import HTTPConnection, HTTPSConnection, HTTPMessage, HTTPResponse
-from cStringIO import StringIO
-
+try:
+    import http.client
+except ImportError:
+    pass
+import six
+from six.moves.http_client import HTTPConnection, HTTPSConnection, HTTPMessage, HTTPResponse
+from six import BytesIO
 from vcr.request import Request
 from vcr.errors import CannotOverwriteExistingCassetteException
+from . import compat
 
 
 def parse_headers_backwards_compat(header_dict):
@@ -14,8 +19,8 @@ def parse_headers_backwards_compat(header_dict):
     parses the old dictionary-style headers for
     backwards-compatability reasons.
     """
-    msg = HTTPMessage(StringIO(""))
-    for key, val in header_dict.iteritems():
+    msg = HTTPMessage(BytesIO(""))
+    for key, val in header_dict.items():
         msg.addheader(key, val)
         msg.headers.append("{0}:{1}".format(key, val))
     return msg
@@ -24,12 +29,8 @@ def parse_headers_backwards_compat(header_dict):
 def parse_headers(header_list):
     if isinstance(header_list, dict):
         return parse_headers_backwards_compat(header_list)
-    headers = "".join(header_list) + "\r\n"
-    msg = HTTPMessage(StringIO(headers))
-    msg.fp.seek(0)
-    msg.readheaders()
-    return msg
-
+    headers = b"".join(header_list) + b"\r\n"
+    return compat.get_httpmessage(headers)
 
 class VCRHTTPResponse(HTTPResponse):
     """
@@ -38,29 +39,38 @@ class VCRHTTPResponse(HTTPResponse):
     def __init__(self, recorded_response):
         self.recorded_response = recorded_response
         self.reason = recorded_response['status']['message']
-        self.status = recorded_response['status']['code']
+        self.status = self.code = recorded_response['status']['code']
         self.version = None
-        self._content = StringIO(self.recorded_response['body']['string'])
+        self._content = BytesIO(self.recorded_response['body']['string'])
         self.closed = False
 
         headers = self.recorded_response['headers']
         self.msg = parse_headers(headers)
 
-        self.length = self.msg.getheader('content-length') or None
+        self.length = compat.get_header(self.msg, 'content-length') or None
 
     def read(self, *args, **kwargs):
         return self._content.read(*args, **kwargs)
 
+    def readline(self, *args, **kwargs):
+        return self._content.readline(*args, **kwargs)
+
     def close(self):
         self.closed = True
         return True
 
+    def getcode(self):
+        return self.status
+
     def isclosed(self):
         return self.closed
 
+    def info(self):
+        return parse_headers(self.recorded_response['headers'])
+
     def getheaders(self):
-        headers = parse_headers(self.recorded_response['headers'])
-        return headers.dict.iteritems()
+        message = parse_headers(self.recorded_response['headers'])
+        return compat.get_header_items(message)
 
     def getheader(self, header, default=None):
         headers = dict(((k, v) for k, v in self.getheaders()))
@@ -166,7 +176,7 @@ class VCRConnection:
                     'code': response.status,
                     'message': response.reason
                 },
-                'headers': response.msg.headers,
+                'headers': compat.get_headers(response),
                 'body': {'string': response.read()},
             }
             self.cassette.append(self._vcr_request, response)
diff --git a/vcr/stubs/compat.py b/vcr/stubs/compat.py
new file mode 100644
index 0000000..e54053f
--- /dev/null
+++ b/vcr/stubs/compat.py
@@ -0,0 +1,43 @@
+import six
+from six import BytesIO
+from six.moves.http_client import HTTPMessage
+try:
+    import http.client
+except ImportError:
+    pass
+
+
+"""
+The python3 http.client api moved some stuff around, so this is an abstraction
+layer that tries to cope with this move.
+"""
+
+def get_header(message, name):
+    if six.PY3:
+        return message.getallmatchingheaders(name)
+    else:
+        return message.getheader(name)
+
+
+def get_header_items(message):
+    if six.PY3:
+        return dict(message._headers).items()
+    else:
+        return message.dict.items()
+
+
+def get_headers(response):
+    if six.PY3:
+        header_list = response.msg._headers
+        return [b': '.join((k.encode('utf-8'), v.encode('utf-8'))) + b'\r\n'
+                 for k, v in header_list]
+    else:
+        return response.msg.headers
+
+def get_httpmessage(headers):
+    if six.PY3:
+        return http.client.parse_headers(BytesIO(headers))
+    msg = HTTPMessage(BytesIO(headers))
+    msg.fp.seek(0)
+    msg.readheaders()
+    return msg