diff --git a/pathspec/tests/test_gitignore.py b/pathspec/tests/test_gitignore.py
index 91b8309..c4ff5af 100644
--- a/pathspec/tests/test_gitignore.py
+++ b/pathspec/tests/test_gitignore.py
@@ -2,8 +2,10 @@
 """
 This script tests ``GitIgnorePattern``.
 """
-
-import unittest
+try:
+	import unittest2 as unittest  # for Python 2.6
+except ImportError:
+	import unittest
 
 from pathspec import GitIgnorePattern
 
diff --git a/setup.py b/setup.py
index 2debb3a..4e37dc7 100644
--- a/setup.py
+++ b/setup.py
@@ -1,6 +1,7 @@
 # coding: utf-8
 
 import io
+import sys
 from setuptools import setup, find_packages
 
 from pathspec import __author__, __email__, __license__, __project__, __version__
@@ -34,4 +35,5 @@
 	license=__license__,
 	packages=find_packages(),
 	test_suite='pathspec.tests.test_gitignore.GitIgnoreTest',
+	tests_require=['unittest2'] if sys.version_info < (2, 7) else [],
 )
diff --git a/tox.ini b/tox.ini
index 3132be9..565a9eb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,9 @@
 [tox]
-envlist = py27, py33, py34, pypy
+envlist = py26, py27, py33, py34, pypy
+
+[testenv:py26]
+deps = unittest2
+commands = python setup.py test
 
 [testenv]
 commands = python setup.py test