diff --git a/tests/finance/test_slippage.py b/tests/finance/test_slippage.py
index b5ad0380..44f1fb8a 100644
--- a/tests/finance/test_slippage.py
+++ b/tests/finance/test_slippage.py
@@ -20,7 +20,7 @@ import datetime
 
 import pytz
 
-from unittest2 import TestCase
+from unittest import TestCase
 
 from zipline.finance.slippage import VolumeShareSlippage
 
diff --git a/tests/test_algorithm.py b/tests/test_algorithm.py
index 0f761fa8..048e50b8 100644
--- a/tests/test_algorithm.py
+++ b/tests/test_algorithm.py
@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from unittest2 import TestCase
+from unittest import TestCase
 from datetime import timedelta
 import numpy as np
 
diff --git a/tests/test_exception_handling.py b/tests/test_exception_handling.py
index cfd9e6b3..be226d81 100644
--- a/tests/test_exception_handling.py
+++ b/tests/test_exception_handling.py
@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from unittest2 import TestCase
+from unittest import TestCase
 
 import zipline.utils.simfactory as simfactory
 from zipline.test_algorithms import (
diff --git a/tests/test_finance.py b/tests/test_finance.py
index a30d492f..28a66f59 100644
--- a/tests/test_finance.py
+++ b/tests/test_finance.py
@@ -18,7 +18,7 @@ Tests for the zipline.finance package
 """
 import pytz
 
-from unittest2 import TestCase
+from unittest import TestCase
 from datetime import datetime, timedelta
 
 from nose.tools import timed
diff --git a/tests/test_sorting.py b/tests/test_sorting.py
index 3903a7a5..fb836c4c 100644
--- a/tests/test_sorting.py
+++ b/tests/test_sorting.py
@@ -15,7 +15,7 @@
 
 import pytz
 
-from unittest2 import TestCase
+from unittest import TestCase
 from itertools import chain, izip_longest
 from datetime import datetime, timedelta
 from collections import deque
diff --git a/tests/test_sources.py b/tests/test_sources.py
index 39decc41..1257ac55 100644
--- a/tests/test_sources.py
+++ b/tests/test_sources.py
@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from unittest2 import TestCase
+from unittest import TestCase
 
 import zipline.utils.factory as factory
 from zipline.sources import DataFrameSource
diff --git a/tests/test_transforms.py b/tests/test_transforms.py
index 3ad29435..8c979095 100644
--- a/tests/test_transforms.py
+++ b/tests/test_transforms.py
@@ -18,7 +18,7 @@ import numpy as np
 import pandas as pd
 
 from datetime import timedelta, datetime
-from unittest2 import TestCase
+from unittest import TestCase
 
 from zipline import ndict
 
diff --git a/tests/test_utils.py b/tests/test_utils.py
index b5fafa7d..00385dbc 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from unittest2 import TestCase
+from unittest import TestCase
 from zipline.utils.factory import load_from_yahoo
 import pandas as pd
 import pytz