diff --git a/.travis.yml b/.travis.yml
index 303bfa7..dab9b93 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,6 +2,8 @@ language: python
 
 python:
   - "2.7"
+  - "3.2"
+  - "3.3"
 
 before_install:
   - sudo add-apt-repository ppa:ubuntu-wine/ppa -y
diff --git a/scripts/run_tests_wine.sh b/scripts/run_tests_wine.sh
index a83c5df..19a76a9 100644
--- a/scripts/run_tests_wine.sh
+++ b/scripts/run_tests_wine.sh
@@ -3,10 +3,16 @@ set -e
 
 export DISPLAY=:99.0
 
-PYTHON="c:/Python27/python.exe"
-COVERAGE="c:/Python27/Scripts/coverage.exe"
+if [ "${TRAVIS_PYTHON_VERSION}" = "2.7" ]; then
+    COVERAGE="c:/Python27/Scripts/coverage.exe"
+elif [ "${TRAVIS_PYTHON_VERSION}" = "3.2" ]; then
+    COVERAGE="c:/Python32/Scripts/coverage.exe"
+elif [ "${TRAVIS_PYTHON_VERSION}" = "3.3" ]; then
+    COVERAGE="c:/Python33/Scripts/coverage.exe"
+else
+    exit 1;
+fi
 
-wine ${PYTHON} -m nose.core win32ctypes
 wine ${COVERAGE} erase
 wine ${COVERAGE} run -m nose.core win32ctypes
 wine ${COVERAGE} report --include=win32ctypes*
diff --git a/scripts/setup_tests_wine.sh b/scripts/setup_tests_wine.sh
index 8a1b8d8..504c1a8 100644
--- a/scripts/setup_tests_wine.sh
+++ b/scripts/setup_tests_wine.sh
@@ -3,12 +3,34 @@ set -e
 
 export DISPLAY=:99.0
 
-PYTHON="c:/Python27/python.exe"
-EASY_INSTALL="c:/Python27/Scripts/easy_install.exe"
-PIP="c:/Python27/Scripts/pip.exe"
+if [ "${TRAVIS_PYTHON_VERSION}" = "2.7" ]; then
+    PYTHON_MSI="python-2.7.6.msi"
+    PYTHON_URL="http://www.python.org/ftp/python/2.7.6/${PYTHON_MSI}"
+    PYTHON="c:/Python27/python.exe"
+    EASY_INSTALL="c:/Python27/Scripts/easy_install.exe"
+    PIP="c:/Python27/Scripts/pip.exe"
+elif [ "${TRAVIS_PYTHON_VERSION}" = "3.2" ]; then
+    PYTHON_MSI="python-3.2.5.msi"
+    PYTHON_URL="http://www.python.org/ftp/python/3.2.5/${PYTHON_MSI}"
+    PYTHON="c:/Python32/python.exe"
+    EASY_INSTALL="c:/Python32/Scripts/easy_install.exe"
+    PIP="c:/Python32/Scripts/pip.exe"
+elif [ "${TRAVIS_PYTHON_VERSION}" = "3.3" ]; then
+    PYTHON_MSI="python-3.3.4.msi"
+    PYTHON_URL="http://www.python.org/ftp/python/3.3.4/${PYTHON_MSI}"
+    PYTHON="c:/Python33/python.exe"
+    EASY_INSTALL="c:/Python33/Scripts/easy_install.exe"
+    PIP="c:/Python33/Scripts/pip.exe"
+else
+    echo "Python ${TRAVIS_PYTHON_VERSION} not supported."
+    exit 1;
+fi
 
-wget http://www.python.org/ftp/python/2.7.6/python-2.7.6.msi
-wine msiexec /i python-2.7.6.msi /qn
+PYWIN32_EXE="pywin32-218.win32-py${TRAVIS_PYTHON_VERSION}.exe"
+PYWIN32_URL="http://sourceforge.net/projects/pywin32/files/pywin32/Build%20218/pywin32-218.win32-py${TRAVIS_PYTHON_VERSION}.exe/download"
+
+wget ${PYTHON_URL}
+wine msiexec /i ${PYTHON_MSI} /qn
 
 wget https://pypi.python.org/packages/source/s/setuptools/setuptools-2.2.tar.gz
 tar xf setuptools-2.2.tar.gz
@@ -16,6 +38,6 @@ tar xf setuptools-2.2.tar.gz
 
 wine ${EASY_INSTALL} nose coverage
 
-wget http://sourceforge.net/projects/pywin32/files/pywin32/Build%20218/pywin32-218.win32-py2.7.exe/download -O pywin32-218.win32-py2.7.exe
+wget ${PYWIN32_URL} -O ${PYWIN32_EXE}
 
-wine ${EASY_INSTALL} pywin32-218.win32-py2.7.exe
+wine ${EASY_INSTALL} ${PYWIN32_EXE}
diff --git a/win32ctypes/_common.py b/win32ctypes/_common.py
index ed97a85..3e39dbc 100644
--- a/win32ctypes/_common.py
+++ b/win32ctypes/_common.py
@@ -14,6 +14,7 @@
 from ctypes import pythonapi, POINTER, c_void_p, py_object
 from ctypes.wintypes import BYTE, UINT
 
+from .compat import PY3
 from ._util import function_factory
 
 PPy_UNICODE = c_void_p
@@ -29,9 +30,14 @@
 
 LPBYTE = POINTER(BYTE)
 
-_PyString_FromStringAndSize = function_factory(
-    pythonapi.PyString_FromStringAndSize,
-    return_type=py_object)
+if PY3:
+    _PyBytes_FromStringAndSize = function_factory(
+        pythonapi.PyBytes_FromStringAndSize,
+        return_type=py_object)
+else:
+    _PyBytes_FromStringAndSize = function_factory(
+        pythonapi.PyString_FromStringAndSize,
+        return_type=py_object)
 
 _GetACP = function_factory(
     kernel32.GetACP,
diff --git a/win32ctypes/_win32cred.py b/win32ctypes/_win32cred.py
index 237e4a0..e78e21e 100644
--- a/win32ctypes/_win32cred.py
+++ b/win32ctypes/_win32cred.py
@@ -13,9 +13,9 @@
 from __future__ import absolute_import
 
 import ctypes
-from ctypes import POINTER, Structure
+from ctypes import POINTER, Structure, c_void_p, c_wchar_p
 from ctypes.wintypes import (
-    BOOL, DWORD, FILETIME, c_void_p, c_wchar_p, LPCWSTR)
+    BOOL, DWORD, FILETIME, LPCWSTR)
 
 from ._common import LPBYTE
 from ._util import function_factory, check_zero, check_zero_factory
diff --git a/win32ctypes/compat.py b/win32ctypes/compat.py
new file mode 100644
index 0000000..07cc4ca
--- /dev/null
+++ b/win32ctypes/compat.py
@@ -0,0 +1,19 @@
+import sys
+
+if sys.version_info[0] >= 3:
+    PY3 = True
+    PY2 = False
+else:
+    PY3 = False
+    PY2 = True
+
+if PY3:
+    def is_unicode(s):
+        return isinstance(s, str)
+
+    unicode = str
+else:
+    def is_unicode(s):
+        return isinstance(s, unicode)
+
+    unicode = unicode
diff --git a/win32ctypes/tests/test_win32cred.py b/win32ctypes/tests/test_win32cred.py
index 0a75c1f..570f218 100644
--- a/win32ctypes/tests/test_win32cred.py
+++ b/win32ctypes/tests/test_win32cred.py
@@ -41,7 +41,7 @@ def test_write_simple(self):
 
         self.assertEqual(res["Type"], CRED_TYPE_GENERIC)
         self.assertEqual(
-            unicode(res["CredentialBlob"], encoding='utf-16'),
+            res["CredentialBlob"].decode(encoding='utf-16'),
             password)
         self.assertEqual(res["UserName"], username)
         self.assertEqual(res["TargetName"], target)
diff --git a/win32ctypes/win32api.py b/win32ctypes/win32api.py
index 06dd532..10ccc15 100644
--- a/win32ctypes/win32api.py
+++ b/win32ctypes/win32api.py
@@ -8,7 +8,7 @@
 
 from __future__ import absolute_import
 
-from ._common import _PyString_FromStringAndSize
+from ._common import _PyBytes_FromStringAndSize
 from . import _win32api
 
 LOAD_LIBRARY_AS_DATAFILE = 0x2
@@ -61,7 +61,7 @@ def LoadResource(hModule, type_, name, language):
     size = _win32api._SizeofResource(hModule, hrsrc)
     hglob = _win32api._LoadResource(hModule, hrsrc)
     pointer = _win32api._LockResource(hglob)
-    return _PyString_FromStringAndSize(pointer, size)
+    return _PyBytes_FromStringAndSize(pointer, size)
 
 
 def FreeLibrary(hModule):
diff --git a/win32ctypes/win32cred.py b/win32ctypes/win32cred.py
index b79757e..ce515c4 100644
--- a/win32ctypes/win32cred.py
+++ b/win32ctypes/win32cred.py
@@ -11,7 +11,8 @@
 
 import ctypes
 
-from ._common import _PyString_FromStringAndSize, _GetACP
+from ._common import _PyBytes_FromStringAndSize, _GetACP
+from .compat import is_unicode, unicode
 from . import _win32cred
 
 CRED_TYPE_GENERIC = 0x1
@@ -103,7 +104,7 @@ def CredRead(TargetName, Type):
             if key != 'CredentialBlob':
                 credential[key] = getattr(c_creds, key)
             else:
-                blob = _PyString_FromStringAndSize(
+                blob = _PyBytes_FromStringAndSize(
                     c_creds.CredentialBlob, c_creds.CredentialBlobSize)
                 credential['CredentialBlob'] = blob
         return credential
@@ -132,7 +133,7 @@ def _make_blob(password):
     Credentials.
 
     """
-    if isinstance(password, unicode):
+    if is_unicode(password):
         return password
     else:
         code_page = _GetACP()