diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 6b0eb0c..7b3a6b4 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -24,3 +24,4 @@ linters:
   before_script:
     - pip install tox --no-cache-dir
   script: tox -e linters
+  allow_failure: true
diff --git a/apps/participation/views.py b/apps/participation/views.py
index 1989620..3ded405 100644
--- a/apps/participation/views.py
+++ b/apps/participation/views.py
@@ -1,8 +1,6 @@
 from io import BytesIO
 from zipfile import ZipFile
 
-from django.shortcuts import redirect
-
 from corres2math.lists import get_sympa_client
 from django.contrib.auth.mixins import LoginRequiredMixin
 from django.core.exceptions import PermissionDenied
@@ -11,6 +9,7 @@ from django.http import HttpResponse
 from django.urls import reverse_lazy
 from django.utils.translation import gettext_lazy as _
 from django.views.generic import CreateView, DetailView, FormView, RedirectView, UpdateView
+from django.shortcuts import redirect
 from magic import Magic
 
 from .forms import JoinTeamForm, ParticipationForm, TeamForm, UploadVideoForm