diff --git a/os_xenapi/dom0/etc/xapi.d/plugins/agent.py b/os_xenapi/dom0/etc/xapi.d/plugins/agent.py
index f079a10..5023720 100644
--- a/os_xenapi/dom0/etc/xapi.d/plugins/agent.py
+++ b/os_xenapi/dom0/etc/xapi.d/plugins/agent.py
@@ -44,7 +44,7 @@ import XenAPIPlugin
 
 import dom0_pluginlib
 dom0_pluginlib.configure_logging("agent")
-import xenstore
+import xenstore  # noqa
 
 
 DEFAULT_TIMEOUT = 30
diff --git a/os_xenapi/dom0/etc/xapi.d/plugins/netwrap.py b/os_xenapi/dom0/etc/xapi.d/plugins/netwrap.py
index 616637e..73ba23a 100644
--- a/os_xenapi/dom0/etc/xapi.d/plugins/netwrap.py
+++ b/os_xenapi/dom0/etc/xapi.d/plugins/netwrap.py
@@ -27,9 +27,9 @@ try:
     import json
 except ImportError:
     import simplejson as json
-import subprocess
+import subprocess  # noqa
 
-import XenAPIPlugin
+import XenAPIPlugin  # noqa
 
 
 ALLOWED_CMDS = [
diff --git a/os_xenapi/tests/plugins/test_dom0_pluginlib.py b/os_xenapi/tests/plugins/test_dom0_pluginlib.py
index 589ff83..1ea5e0e 100644
--- a/os_xenapi/tests/plugins/test_dom0_pluginlib.py
+++ b/os_xenapi/tests/plugins/test_dom0_pluginlib.py
@@ -188,8 +188,8 @@ class PluginlibDom0(plugin_test.PluginTestBase):
 
     @mock.patch.object(time, 'sleep')
     def test_vbd_unplug_with_retry_exceed_max_attempts(self, mock_sleep):
-        side_effects = ([FakeUnplugException(['DEVICE_DETACH_REJECTED'])]
-                        * (self.dom0_pluginlib.MAX_VBD_UNPLUG_RETRIES + 1))
+        side_effects = ([FakeUnplugException(['DEVICE_DETACH_REJECTED'])] *
+                        (self.dom0_pluginlib.MAX_VBD_UNPLUG_RETRIES + 1))
         self.session.xenapi.VBD.unplug.side_effect = side_effects
         self.dom0_pluginlib.XenAPI.Failure = FakeUnplugException
 
diff --git a/os_xenapi/tests/plugins/test_xenhost.py b/os_xenapi/tests/plugins/test_xenhost.py
index 0cc35bb..8b51aac 100644
--- a/os_xenapi/tests/plugins/test_xenhost.py
+++ b/os_xenapi/tests/plugins/test_xenhost.py
@@ -127,8 +127,8 @@ class VMOperationTestCase(plugin_test.PluginTestBase):
         fake_compute_ref = -1
         side_effect_xenapi_failure = FakeXenAPIException
         side_effect_plugin_error = (
-            [self.pluginlib.PluginError]
-            * self.host.DEFAULT_TRIES)
+            [self.pluginlib.PluginError] *
+            self.host.DEFAULT_TRIES)
         self.mock_patch_object(self.session.xenapi.VM,
                                'start')
         self.session.xenapi.VM.start.side_effect = \
@@ -967,8 +967,8 @@ class XenHostTestCase(plugin_test.PluginTestBase):
 
         self.host.get_pci_type('fake_session', fake_pci_device)
         self.host._run_command.assert_called_with(
-            ["ls", "/sys/bus/pci/devices/" + '0000:'
-             + fake_pci_device + "/"])
+            ["ls", "/sys/bus/pci/devices/" + '0000:' +
+             fake_pci_device + "/"])
 
     def test_get_pci_type_physfn(self):
         fake_pci_device = '0000:00:00.0'
diff --git a/test-requirements.txt b/test-requirements.txt
index fad9b7f..419388f 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-hacking<0.12,>=0.11.0 # Apache-2.0
+hacking>=1.1.0,<1.2.0 # Apache-2.0
 
 coverage!=4.4,>=4.0 # Apache-2.0
 python-subunit>=1.0.0 # Apache-2.0/BSD