diff --git a/combo_plugin_gnm/management/commands/gnm_reporting.py b/combo_plugin_gnm/management/commands/gnm_reporting.py
index 7198798..864c35b 100644
--- a/combo_plugin_gnm/management/commands/gnm_reporting.py
+++ b/combo_plugin_gnm/management/commands/gnm_reporting.py
@@ -15,6 +15,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import html
+from io import BytesIO
 import os
 import re
 import xml.etree.ElementTree as ET
@@ -24,7 +25,6 @@ from django.conf import settings
 from django.contrib.auth import get_user_model
 from django.core.files.storage import default_storage
 from django.core.management.base import BaseCommand, CommandError
-from django.utils.six import BytesIO
 
 from combo.data.models import TextCell
 from combo.utils import requests
diff --git a/combo_plugin_gnm/templatetags/gnm.py b/combo_plugin_gnm/templatetags/gnm.py
index 49abdeb..4d4bf15 100644
--- a/combo_plugin_gnm/templatetags/gnm.py
+++ b/combo_plugin_gnm/templatetags/gnm.py
@@ -30,7 +30,6 @@ from django import template
 from django.conf import settings
 from django.core.serializers.json import DjangoJSONEncoder
 from django.core import signing
-from django.utils import six
 from django.utils.dateparse import parse_date, parse_datetime
 from django.utils.http import quote
 from django.utils.html import format_html
@@ -595,7 +594,7 @@ def as_commune(user_data):
     if not user_data:
         return None
 
-    if isinstance(user_data, six.string_types):
+    if isinstance(user_data, str):
         # user_data is expected to be (page) slug
         collectivities = get_gnm_collectivities()
         for collectivity in collectivities: