diff --git a/mistraldashboard/executions/tables.py b/mistraldashboard/executions/tables.py
index 541ee83..ba0244e 100644
--- a/mistraldashboard/executions/tables.py
+++ b/mistraldashboard/executions/tables.py
@@ -56,7 +56,7 @@ class ExecutionsTable(tables.DataTable):
 
     state = tables.Column("state", verbose_name=_("State"), filters=[label])
 
-    class Meta:
+    class Meta(object):
         name = "executions"
         verbose_name = _("Executions")
 
@@ -73,6 +73,6 @@ class TaskTable(tables.DataTable):
 
     state = tables.Column("state", verbose_name=_("State"), filters=[label])
 
-    class Meta:
+    class Meta(object):
         name = "tasks"
         verbose_name = _("Tasks")
diff --git a/mistraldashboard/tasks/tables.py b/mistraldashboard/tasks/tables.py
index 2c9b211..6d6ada5 100644
--- a/mistraldashboard/tasks/tables.py
+++ b/mistraldashboard/tasks/tables.py
@@ -50,6 +50,6 @@ class TaskTable(tables.DataTable):
 
     state = tables.Column("state", verbose_name=_("State"), filters=[label])
 
-    class Meta:
+    class Meta(object):
         name = "tasks"
         verbose_name = _("Tasks")
diff --git a/mistraldashboard/workbooks/tables.py b/mistraldashboard/workbooks/tables.py
index aefe58e..89f473a 100644
--- a/mistraldashboard/workbooks/tables.py
+++ b/mistraldashboard/workbooks/tables.py
@@ -51,6 +51,6 @@ class WorkbooksTable(tables.DataTable):
     def get_object_id(self, datum):
         return datum.name
 
-    class Meta:
+    class Meta(object):
         name = "workbooks"
         verbose_name = _("Workbooks")
diff --git a/mistraldashboard/workflows/tables.py b/mistraldashboard/workflows/tables.py
index 0c4cb7f..8fdd40e 100644
--- a/mistraldashboard/workflows/tables.py
+++ b/mistraldashboard/workflows/tables.py
@@ -68,7 +68,7 @@ class WorkflowsTable(tables.DataTable):
     def get_object_id(self, datum):
         return datum.name
 
-    class Meta:
+    class Meta(object):
         name = "workflows"
         verbose_name = _("Workflows")
         row_actions = (ExecuteWorkflow,)
diff --git a/tox.ini b/tox.ini
index 98212b4..24a8d1d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -47,6 +47,5 @@ commands = oslo_debug_helper {posargs}
 
 [flake8]
 show-source = True
-ignore = H101,H803,H238
 builtins = _
 exclude=.venv,.git,.tox,dist,doc,*openstack/common*,*lib/python*,*egg,build,.ropeproject,tools