diff --git a/tests/test_logging.py b/tests/test_logging.py
index 9630bc8..37131d2 100644
--- a/tests/test_logging.py
+++ b/tests/test_logging.py
@@ -8,7 +8,6 @@ from wakatime.packages.requests.models import Response
 
 import logging
 import os
-import tempfile
 import time
 import shutil
 import sys
@@ -67,7 +66,7 @@ class LoggingTestCase(utils.TestCase):
         response.status_code = 0
         self.patched['wakatime.packages.requests.adapters.HTTPAdapter.send'].return_value = response
 
-        with tempfile.NamedTemporaryFile() as fh:
+        with utils.NamedTemporaryFile() as fh:
             now = u(int(time.time()))
             entity = 'tests/samples/codefiles/python.py'
             config = 'tests/samples/configs/good_config.cfg'
diff --git a/tests/test_offlinequeue.py b/tests/test_offlinequeue.py
index 6b9e157..1cca921 100644
--- a/tests/test_offlinequeue.py
+++ b/tests/test_offlinequeue.py
@@ -9,7 +9,6 @@ import logging
 import os
 import sqlite3
 import sys
-import tempfile
 import time
 from testfixtures import log_capture
 from wakatime.compat import u
@@ -39,7 +38,7 @@ class OfflineQueueTestCase(utils.TestCase):
     ]
 
     def test_heartbeat_saved_from_error_response(self):
-        with tempfile.NamedTemporaryFile() as fh:
+        with utils.NamedTemporaryFile() as fh:
             with utils.mock.patch('wakatime.offlinequeue.Queue.get_db_file') as mock_db_file:
                 mock_db_file.return_value = fh.name
 
@@ -59,7 +58,7 @@ class OfflineQueueTestCase(utils.TestCase):
                 self.assertEquals(os.path.realpath(entity), saved_heartbeat['entity'])
 
     def test_heartbeat_discarded_from_400_response(self):
-        with tempfile.NamedTemporaryFile() as fh:
+        with utils.NamedTemporaryFile() as fh:
             with utils.mock.patch('wakatime.offlinequeue.Queue.get_db_file') as mock_db_file:
                 mock_db_file.return_value = fh.name
 
@@ -79,7 +78,7 @@ class OfflineQueueTestCase(utils.TestCase):
                 self.assertEquals(None, saved_heartbeat)
 
     def test_offline_heartbeat_sent_after_success_response(self):
-        with tempfile.NamedTemporaryFile() as fh:
+        with utils.NamedTemporaryFile() as fh:
             with utils.mock.patch('wakatime.offlinequeue.Queue.get_db_file') as mock_db_file:
                 mock_db_file.return_value = fh.name
 
@@ -102,7 +101,7 @@ class OfflineQueueTestCase(utils.TestCase):
                 self.assertEquals(None, saved_heartbeat)
 
     def test_all_offline_heartbeats_sent_after_success_response(self):
-        with tempfile.NamedTemporaryFile() as fh:
+        with utils.NamedTemporaryFile() as fh:
             with utils.mock.patch('wakatime.offlinequeue.Queue.get_db_file') as mock_db_file:
                 mock_db_file.return_value = fh.name
 
@@ -172,7 +171,7 @@ class OfflineQueueTestCase(utils.TestCase):
                 self.assertEquals(u(int(data.get('time'))), now2)
 
     def test_auth_error_when_sending_offline_heartbeats(self):
-        with tempfile.NamedTemporaryFile() as fh:
+        with utils.NamedTemporaryFile() as fh:
             with utils.mock.patch('wakatime.offlinequeue.Queue.get_db_file') as mock_db_file:
                 mock_db_file.return_value = fh.name
 
@@ -227,7 +226,7 @@ class OfflineQueueTestCase(utils.TestCase):
                 self.assertEquals(os.path.realpath(entity2), saved_heartbeat['entity'])
 
     def test_500_error_when_sending_offline_heartbeats(self):
-        with tempfile.NamedTemporaryFile() as fh:
+        with utils.NamedTemporaryFile() as fh:
             with utils.mock.patch('wakatime.offlinequeue.Queue.get_db_file') as mock_db_file:
                 mock_db_file.return_value = fh.name
 
@@ -282,7 +281,7 @@ class OfflineQueueTestCase(utils.TestCase):
                 self.assertEquals(os.path.realpath(entity2), saved_heartbeat['entity'])
 
     def test_empty_project_can_be_saved(self):
-        with tempfile.NamedTemporaryFile() as fh:
+        with utils.NamedTemporaryFile() as fh:
             with utils.mock.patch('wakatime.offlinequeue.Queue.get_db_file') as mock_db_file:
                 mock_db_file.return_value = fh.name
 
@@ -304,7 +303,7 @@ class OfflineQueueTestCase(utils.TestCase):
                 self.assertEquals(os.path.realpath(entity), saved_heartbeat['entity'])
 
     def test_get_handles_connection_exception(self):
-        with tempfile.NamedTemporaryFile() as fh:
+        with utils.NamedTemporaryFile() as fh:
             with utils.mock.patch('wakatime.offlinequeue.Queue.get_db_file') as mock_db_file:
                 mock_db_file.return_value = fh.name
 
@@ -334,7 +333,7 @@ class OfflineQueueTestCase(utils.TestCase):
                 self.assertEquals(os.path.realpath(entity), saved_heartbeat['entity'])
 
     def test_push_handles_connection_exception(self):
-        with tempfile.NamedTemporaryFile() as fh:
+        with utils.NamedTemporaryFile() as fh:
             with utils.mock.patch('wakatime.offlinequeue.Queue.get_db_file') as mock_db_file:
                 mock_db_file.return_value = fh.name
 
@@ -369,7 +368,7 @@ class OfflineQueueTestCase(utils.TestCase):
     def test_heartbeat_saved_when_requests_raises_exception(self, logs):
         logging.disable(logging.NOTSET)
 
-        with tempfile.NamedTemporaryFile() as fh:
+        with utils.NamedTemporaryFile() as fh:
             with utils.mock.patch('wakatime.offlinequeue.Queue.get_db_file') as mock_db_file:
                 mock_db_file.return_value = fh.name
 
diff --git a/tests/test_session_cache.py b/tests/test_session_cache.py
index 1484a90..59e79e0 100644
--- a/tests/test_session_cache.py
+++ b/tests/test_session_cache.py
@@ -1,7 +1,6 @@
 # -*- coding: utf-8 -*-
 
 
-import tempfile
 from wakatime.session_cache import SessionCache
 from wakatime.logger import setup_logging
 from . import utils
@@ -29,7 +28,7 @@ class SessionCacheTestCase(utils.TestCase):
         setup_logging(self.args, self.args.version)
 
     def test_can_crud_session(self):
-        with tempfile.NamedTemporaryFile() as fh:
+        with utils.NamedTemporaryFile() as fh:
             cache = SessionCache()
             cache.DB_FILE = fh.name
 
@@ -43,7 +42,7 @@ class SessionCacheTestCase(utils.TestCase):
             self.assertEquals(session.headers.get('x-test'), None)
 
     def test_handles_connection_exception(self):
-        with tempfile.NamedTemporaryFile() as fh:
+        with utils.NamedTemporaryFile() as fh:
             cache = SessionCache()
             cache.DB_FILE = fh.name
 
diff --git a/tests/utils.py b/tests/utils.py
index 8dc92f9..67f9d67 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -1,7 +1,9 @@
 # -*- coding: utf-8 -*-
 
 import logging
+import os
 import sys
+import tempfile
 
 from wakatime.compat import u
 
@@ -17,6 +19,7 @@ except ImportError:
     # Python >= 2.7
     import unittest
 
+
 class TestCase(unittest.TestCase):
     patch_these = []
 
@@ -62,7 +65,6 @@ try:
 except ImportError:
     # Python < 3
     import shutil
-    import tempfile
     class TemporaryDirectory(object):
         """Context manager for tempfile.mkdtemp().
 
@@ -77,6 +79,25 @@ except ImportError:
             shutil.rmtree(self.name)
 
 
+class NamedTemporaryFile(object):
+    """Context manager for a named temporary file compatible with Windows.
+
+    Provides the path to a closed temporary file that is writeable. Deletes the
+    temporary file when exiting the context manager. The built-in
+    tempfile.NamedTemporaryFile is not writeable on Windows.
+    """
+    name = None
+
+    def __enter__(self):
+        fh = tempfile.NamedTemporaryFile(delete=False)
+        self.name = fh.name
+        fh.close()
+        return self
+
+    def __exit__(self, type, value, traceback):
+        os.unlink(self.name)
+
+
 class DynamicIterable(object):
     def __init__(self, data, max_calls=None, raise_on_calls=None):
         self.called = 0