diff --git a/src/rer/newsletter/content/channel.py b/src/rer/newsletter/content/channel.py
index 7c25524d..43338d19 100644
--- a/src/rer/newsletter/content/channel.py
+++ b/src/rer/newsletter/content/channel.py
@@ -1,9 +1,9 @@
 # -*- coding: utf-8 -*-
 from plone.app.contenttypes.content import Folder
-from rer.newsletter.interfaces import IChannel
-from zope.interface import implementer
 from rer.newsletter.adapter.subscriptions import IChannelSubscriptions
+from rer.newsletter.interfaces import IChannel
 from zope.component import getMultiAdapter
+from zope.interface import implementer
 
 
 @implementer(IChannel)
diff --git a/src/rer/newsletter/content/message.py b/src/rer/newsletter/content/message.py
index 76744438..d3d639f1 100644
--- a/src/rer/newsletter/content/message.py
+++ b/src/rer/newsletter/content/message.py
@@ -12,9 +12,9 @@
 from zope.component import queryUtility
 from zope.interface import implementer
 
-
 import re
 
+
 try:
     from collective.taskqueue.interfaces import ITaskQueue
     from rer.newsletter.queue.handler import QUEUE_NAME
diff --git a/src/rer/newsletter/restapi/services/message_send/get.py b/src/rer/newsletter/restapi/services/message_send/get.py
index 4daa8503..eae8f6b1 100644
--- a/src/rer/newsletter/restapi/services/message_send/get.py
+++ b/src/rer/newsletter/restapi/services/message_send/get.py
@@ -4,6 +4,7 @@
 
 import pyotp
 
+
 NEWSLETTER_COUNTER_KEY = "newsletter-send-counter"
 
 
diff --git a/src/rer/newsletter/restapi/services/message_send/post.py b/src/rer/newsletter/restapi/services/message_send/post.py
index 25cd59fe..b6027f21 100644
--- a/src/rer/newsletter/restapi/services/message_send/post.py
+++ b/src/rer/newsletter/restapi/services/message_send/post.py
@@ -1,16 +1,14 @@
 # -*- coding: utf-8 -*-
 from plone import api
+from plone.protect.interfaces import IDisableCSRFProtection
+from plone.restapi.deserializer import json_body
 from plone.restapi.services import Service
 from rer.newsletter import _
-from plone.restapi.deserializer import json_body
+from rer.newsletter.restapi.services.message_send.get import NEWSLETTER_COUNTER_KEY
 from rer.newsletter.utils import OK
-from plone.protect.interfaces import IDisableCSRFProtection
-from zope.interface import alsoProvides
-from rer.newsletter.restapi.services.message_send.get import (
-    NEWSLETTER_COUNTER_KEY,
-)
-from zope.annotation.interfaces import IAnnotations
 from zExceptions import BadRequest
+from zope.annotation.interfaces import IAnnotations
+from zope.interface import alsoProvides
 
 import pyotp
 
diff --git a/src/rer/newsletter/restapi/services/test_send/post.py b/src/rer/newsletter/restapi/services/test_send/post.py
index 065c7215..e9848313 100644
--- a/src/rer/newsletter/restapi/services/test_send/post.py
+++ b/src/rer/newsletter/restapi/services/test_send/post.py
@@ -2,8 +2,8 @@
 from plone import api
 from plone.restapi.deserializer import json_body
 from plone.restapi.services import Service
-from zExceptions import BadRequest
 from rer.newsletter import _
+from zExceptions import BadRequest
 
 
 class TestSendPost(Service):