@@ -5,7 +5,6 @@
 # the BSD License: http://www.opensource.org/licenses/bsd-license.php
 
 import os
-import os.path
 import sys
 import select
 import logging
@@ -213,11 +212,11 @@ def _deplete_buffer(fno, handler, buf_list, wg=None):
 
 def dashify(string):
     return string.replace('_', '-')
-    
+
 
 def slots_to_dict(self, exclude=()):
     return dict((s, getattr(self, s)) for s in self.__slots__ if s not in exclude)
-    
+
 
 def dict_to_slots_and__excluded_are_none(self, d, excluded=()):
     for k, v in d.items():
@@ -246,15 +245,15 @@ class Git(LazyMixin):
     """
     __slots__ = ("_working_dir", "cat_file_all", "cat_file_header", "_version_info",
                  "_git_options", "_environment")
-                 
+
     _excluded_ = ('cat_file_all', 'cat_file_header', '_version_info')
-    
+
     def __getstate__(self):
         return slots_to_dict(self, exclude=self._excluded_)
-        
+
     def __setstate__(self, d):
         dict_to_slots_and__excluded_are_none(self, d, excluded=self._excluded_)
-        
+
     # CONFIGURATION
     # The size in bytes read from stdout when copying git's output to another stream
     max_chunk_size = 1024 * 64
@@ -267,7 +266,7 @@ def __setstate__(self, d):
 
     # value of Windows process creation flag taken from MSDN
     CREATE_NO_WINDOW = 0x08000000
-    
+
     # Provide the full path to the git executable. Otherwise it assumes git is in the path
     _git_exec_env_var = "GIT_PYTHON_GIT_EXECUTABLE"
     GIT_PYTHON_GIT_EXECUTABLE = os.environ.get(_git_exec_env_var, git_exec_name)
@@ -339,7 +338,7 @@ def wait(self, stderr=b''):
             if stderr is None:
                 stderr = b''
             stderr = force_bytes(stderr)
-            
+
             status = self.proc.wait()
 
             def read_all_from_possibly_closed_stream(stream):
 
@@ -16,7 +16,10 @@
     assert_false
 )
 
-from mock import patch
+try:
+    from unittest.mock import patch
+except ImportError:
+    from mock import patch
 
 __all__ = ['assert_instance_of', 'assert_not_instance_of',
            'assert_none', 'assert_not_none',
 
@@ -34,7 +34,11 @@
 import os
 from datetime import datetime
 from git.objects.util import tzoffset, utc
-from mock import Mock
+
+try:
+    from unittest.mock import Mock
+except ImportError:
+    from mock import Mock
 
 
 def assert_commit_serialization(rwrepo, commit_id, print_performance_info=False):
@@ -343,9 +347,9 @@ def test_gpgsig(self):
         cstream = BytesIO()
         cmt._serialize(cstream)
         assert re.search(r"^gpgsig <test\n dummy\n sig>$", cstream.getvalue().decode('ascii'), re.MULTILINE)
-        
+
         self.assert_gpgsig_deserialization(cstream)
-        
+
         cstream.seek(0)
         cmt.gpgsig = None
         cmt._deserialize(cstream)
@@ -355,27 +359,27 @@ def test_gpgsig(self):
         cstream = BytesIO()
         cmt._serialize(cstream)
         assert not re.search(r"^gpgsig ", cstream.getvalue().decode('ascii'), re.MULTILINE)
-        
+
     def assert_gpgsig_deserialization(self, cstream):
         assert 'gpgsig' in 'precondition: need gpgsig'
-        
+
         class RepoMock:
             def __init__(self, bytestr):
                 self.bytestr = bytestr
-                
+
             @property
             def odb(self):
                 class ODBMock:
                     def __init__(self, bytestr):
                         self.bytestr = bytestr
-                        
+
                     def stream(self, *args):
                         stream = Mock(spec_set=['read'], return_value=self.bytestr)
                         stream.read.return_value = self.bytestr
                         return ('binsha', 'typename', 'size', stream)
-                        
+
                 return ODBMock(self.bytestr)
-                    
+
         repo_mock = RepoMock(cstream.getvalue())
         for field in Commit.__slots__:
             c = Commit(repo_mock, b'x' * 20)
 
@@ -6,7 +6,6 @@
 # the BSD License: http://www.opensource.org/licenses/bsd-license.php
 import os
 import sys
-import mock
 import subprocess
 
 from git.test.lib import (
@@ -28,6 +27,11 @@
 
 from git.compat import PY3
 
+try:
+    from unittest import mock
+except ImportError:
+    import mock
+
 
 class TestGit(TestBase):
 
 
@@ -68,8 +68,10 @@ def _stamp_version(filename):
         print("WARNING: Couldn't find version line in file %s" % filename, file=sys.stderr)
 
 install_requires = ['gitdb >= 0.6.4']
+test_requires = ['node']
 if sys.version_info[:2] < (2, 7):
     install_requires.append('ordereddict')
+    test_requires.append('mock')
 # end
 
 setup(
@@ -87,7 +89,7 @@ def _stamp_version(filename):
     license="BSD License",
     requires=['gitdb (>=0.6.4)'],
     install_requires=install_requires,
-    test_requirements=['mock', 'nose'] + install_requires,
+    test_requirements=test_requires + install_requires,
     zip_safe=False,
     long_description="""\
 GitPython is a python library used to interact with Git repositories""",