diff --git a/os_faults/ansible/modules/freeze.py b/os_faults/ansible/modules/freeze.py
index 05639f7..8b03039 100644
--- a/os_faults/ansible/modules/freeze.py
+++ b/os_faults/ansible/modules/freeze.py
@@ -12,7 +12,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from ansible.module_utils.basic import *  # noqa
+from ansible.module_utils.basic import AnsibleModule  # noqa
 
 
 def main():
diff --git a/os_faults/ansible/modules/iptables.py b/os_faults/ansible/modules/iptables.py
index de5c1f1..f540e6a 100644
--- a/os_faults/ansible/modules/iptables.py
+++ b/os_faults/ansible/modules/iptables.py
@@ -12,7 +12,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from ansible.module_utils.basic import *  # noqa
+from ansible.module_utils.basic import AnsibleModule  # noqa
 
 
 def main():
diff --git a/os_faults/ansible/modules/kill.py b/os_faults/ansible/modules/kill.py
index e8c825e..15dd69d 100644
--- a/os_faults/ansible/modules/kill.py
+++ b/os_faults/ansible/modules/kill.py
@@ -12,7 +12,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from ansible.module_utils.basic import *  # noqa
+from ansible.module_utils.basic import AnsibleModule  # noqa
 
 
 def main():
diff --git a/os_faults/ansible/modules/stress.py b/os_faults/ansible/modules/stress.py
index c40febc..e7caaa4 100644
--- a/os_faults/ansible/modules/stress.py
+++ b/os_faults/ansible/modules/stress.py
@@ -12,7 +12,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from ansible.module_utils.basic import *  # noqa
+from ansible.module_utils.basic import AnsibleModule  # noqa
 
 STRESSORS_MAP = {
     'cpu': '--cpu 0',
diff --git a/os_faults/api/utils.py b/os_faults/api/utils.py
index ca47f36..6eb7153 100644
--- a/os_faults/api/utils.py
+++ b/os_faults/api/utils.py
@@ -20,5 +20,5 @@ def public(func):
 
 
 def is_public(obj):
-    return ((inspect.isfunction(obj) or inspect.ismethod(obj))
-            and hasattr(obj, '__public__'))
+    return ((inspect.isfunction(obj) or inspect.ismethod(obj)) and
+            hasattr(obj, '__public__'))
diff --git a/test-requirements.txt b/test-requirements.txt
index f72ee21..3680910 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!=0.13.0,<0.14,>=0.12.0 # Apache-2.0
+hacking>=1.1.0,<1.2.0 # Apache-2.0
 pytest<=3.0.2,>=2.7 # MIT
 pytest-cov<=2.3.1,>=2.2.1 # MIT
 pytest-html<=1.10.0,>=1.10.0 # Mozilla Public License 2.0 (MPL 2.0)
diff --git a/tox.ini b/tox.ini
index 47718c3..947447a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -99,6 +99,7 @@ commands = {[testenv:debug]commands}
 [flake8]
 # E123 skipped because it is ignored by default in the default pep8.
 # E125 skipped until https://github.com/jcrocholl/pep8/issues/126 is resolved.
-ignore = E123,E125
+# E731 skipped as assign a lambda expression
+ignore = E123,E125,E731
 show-source = True
 exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build