diff --git a/lower-constraints.txt b/lower-constraints.txt
index 95ea5928..a60a0a71 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -23,10 +23,8 @@ eventlet==0.18.2
 extras==1.0.0
 fasteners==0.7.0
 fixtures==3.0.0
-flake8==2.5.5
 futurist==1.2.0
 greenlet==0.4.10
-hacking==0.12.0
 horizon==17.1.0
 idna==2.6
 iso8601==0.1.11
@@ -65,14 +63,12 @@ osprofiler==2.3.0
 Paste==2.0.2
 PasteDeploy==1.5.0
 pbr==2.0.0
-pep8==1.5.7
 pika==0.10.0
 pika-pool==0.1.3
 Pint==0.5
 positional==1.2.1
 prettytable==0.7.2
 pycparser==2.18
-pyflakes==0.8.1
 pyinotify==0.9.6
 pymongo==3.0.2
 pyOpenSSL==17.1.0
diff --git a/sahara_dashboard/content/data_processing/clusters/clusters/workflows/create.py b/sahara_dashboard/content/data_processing/clusters/clusters/workflows/create.py
index 5f4f802d..3c559db8 100644
--- a/sahara_dashboard/content/data_processing/clusters/clusters/workflows/create.py
+++ b/sahara_dashboard/content/data_processing/clusters/clusters/workflows/create.py
@@ -70,10 +70,10 @@ class GeneralConfigAction(workflows.Action):
     description = forms.CharField(label=_("Description"),
                                   required=False,
                                   widget=forms.Textarea(attrs={'rows': 4}))
-    cluster_template = forms.DynamicChoiceField(label=_("Cluster Template"),
-                                                initial=(None, "None"),
-                                                add_item_link=
-                                                TEMPLATE_UPLOAD_URL)
+    cluster_template = forms.DynamicChoiceField(
+        label=_("Cluster Template"),
+        initial=(None, "None"),
+        add_item_link=TEMPLATE_UPLOAD_URL)
 
     cluster_count = forms.IntegerField(min_value=1,
                                        label=_("Cluster Count"),
diff --git a/sahara_dashboard/content/data_processing/jobs/job_templates/workflows/launch.py b/sahara_dashboard/content/data_processing/jobs/job_templates/workflows/launch.py
index 9bde870e..cf35b3f3 100644
--- a/sahara_dashboard/content/data_processing/jobs/job_templates/workflows/launch.py
+++ b/sahara_dashboard/content/data_processing/jobs/job_templates/workflows/launch.py
@@ -289,10 +289,10 @@ class JobConfigAction(workflows.Action):
                     edp_configs[self.EDP_ADAPT_SPARK_SWIFT])
             if (self.EDP_SUBST_DATASOURCE_NAME in edp_configs or
                     self.EDP_SUBST_DATASOURCE_UUID in edp_configs):
-                    self.fields['datasource_substitute'].initial = (
-                        edp_configs.get(self.EDP_SUBST_DATASOURCE_UUID, True)
-                        or
-                        edp_configs.get(self.EDP_SUBST_DATASOURCE_NAME, True))
+                self.fields['datasource_substitute'].initial = (
+                    edp_configs.get(self.EDP_SUBST_DATASOURCE_UUID, True)
+                    or
+                    edp_configs.get(self.EDP_SUBST_DATASOURCE_NAME, True))
 
     def clean(self):
         cleaned_data = super(workflows.Action, self).clean()
diff --git a/sahara_dashboard/test/settings.py b/sahara_dashboard/test/settings.py
index c5a5afc0..1d880a2e 100644
--- a/sahara_dashboard/test/settings.py
+++ b/sahara_dashboard/test/settings.py
@@ -13,7 +13,7 @@
 from horizon.test.settings import *  # noqa
 from openstack_dashboard.test.settings import *  # noqa
 
-INSTALLED_APPS = list(INSTALLED_APPS)
+INSTALLED_APPS = list(INSTALLED_APPS)  # noqa: F405
 INSTALLED_APPS.append('sahara_dashboard.content.data_processing.clusters')
 INSTALLED_APPS.append('sahara_dashboard.content.data_processing.jobs')
 INSTALLED_APPS.append('sahara_dashboard.content.data_processing.data_plugins')
diff --git a/test-requirements.txt b/test-requirements.txt
index 67e219dc..88b2c5a7 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>=3.0,<3.1.0 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
 ddt>=1.0.1 # MIT
 mock>=2.0.0 # BSD
diff --git a/tox.ini b/tox.ini
index 7fc9375b..8b76b094 100644
--- a/tox.ini
+++ b/tox.ini
@@ -57,7 +57,9 @@ commands = oslo_debug_helper -t sahara_dashboard/test {posargs}
 show-source = True
 # E123, E125 skipped as they are invalid PEP-8.
 # H405 multi line docstring summary not separated with an empty line
-ignore = E123,E125,H405
+# W503 line break before binary operator
+# W504 line break after binary operator
+ignore = E123,E125,H405,W503,W504
 enable-extensions = H203,H106
 builtins = _
 exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build,.ropeproject,tools,.tmp