diff --git a/symposion/proposals/models.py b/symposion/proposals/models.py
index 23f65608..2e87e523 100644
--- a/symposion/proposals/models.py
+++ b/symposion/proposals/models.py
@@ -173,6 +173,7 @@ def notification_email_context(self):
     def __str__(self):
         return self.title
 
+
 reversion.register(ProposalBase)
 
 
diff --git a/symposion/reviews/models.py b/symposion/reviews/models.py
index 1419e134..1e07fabe 100644
--- a/symposion/reviews/models.py
+++ b/symposion/reviews/models.py
@@ -34,6 +34,8 @@ class Votes(object):
         (MINUS_ZERO, _("−0 — Weak proposal, but I will not argue strongly against acceptance.")),
         (MINUS_ONE, _("−1 — Serious issues and I will argue to reject this proposal.")),
     ]
+
+
 VOTES = Votes()
 
 
@@ -381,4 +383,6 @@ def accepted_proposal(sender, instance=None, **kwargs):
         promote_proposal(instance.proposal)
     else:
         unpromote_proposal(instance.proposal)
+
+
 post_save.connect(accepted_proposal, sender=ProposalResult)
diff --git a/symposion/sponsorship/models.py b/symposion/sponsorship/models.py
index f28bc57e..f93bf8c2 100644
--- a/symposion/sponsorship/models.py
+++ b/symposion/sponsorship/models.py
@@ -203,12 +203,16 @@ def benefit_is_complete(self, name):
 def _store_initial_level(sender, instance, **kwargs):
     if instance:
         instance._initial_level_id = instance.level_id
+
+
 post_init.connect(_store_initial_level, sender=Sponsor)
 
 
 def _check_level_change(sender, instance, created, **kwargs):
     if instance and (created or instance.level_id != instance._initial_level_id):
         instance.reset_benefits()
+
+
 post_save.connect(_check_level_change, sender=Sponsor)
 
 
@@ -330,4 +334,6 @@ def _denorm_weblogo(sender, instance, created, **kwargs):
             sponsor = instance.sponsor
             sponsor.sponsor_logo = instance
             sponsor.save()
+
+
 post_save.connect(_denorm_weblogo, sender=SponsorBenefit)
diff --git a/symposion/teams/admin.py b/symposion/teams/admin.py
index 1a27c7ee..a8c3bec7 100644
--- a/symposion/teams/admin.py
+++ b/symposion/teams/admin.py
@@ -13,4 +13,5 @@ class MembershipAdmin(VersionAdmin):
     list_filter = ["team"]
     search_fields = ["user__username"]
 
+
 admin.site.register(Membership, MembershipAdmin)
diff --git a/symposion/teams/models.py b/symposion/teams/models.py
index 774dfbd8..f6ab7253 100644
--- a/symposion/teams/models.py
+++ b/symposion/teams/models.py
@@ -69,6 +69,7 @@ class Meta:
         verbose_name = _('Team')
         verbose_name_plural = _('Teams')
 
+
 MEMBERSHIP_STATE_CHOICES = [
     ("applied", _("applied")),
     ("invited", _("invited")),
@@ -93,4 +94,5 @@ class Meta:
         verbose_name = _("Membership")
         verbose_name_plural = _("Memberships")
 
+
 reversion.register(Membership)