diff --git a/.travis.yml b/.travis.yml
index 54441a5..980f39b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,7 @@ language: python
 python:
   - 3.6
   - 3.7
+  - 3.8
 
 install: pip install tox-travis coveralls
 
diff --git a/billing/__init__.py b/billing/__init__.py
index 66abf87..f91fef9 100644
--- a/billing/__init__.py
+++ b/billing/__init__.py
@@ -1,4 +1,4 @@
-__version__ = '1.7.19'
+__version__ = '1.7.20'
 __copyright__ = 'Copyright (c) 2020, Skioo SA'
 __licence__ = 'MIT'
 __URL__ = 'https://github.com/skioo/django-customer-billing'
diff --git a/billing/admin.py b/billing/admin.py
index 04b1c5c..89e91ad 100644
--- a/billing/admin.py
+++ b/billing/admin.py
@@ -1,13 +1,13 @@
 from datetime import date, datetime
+from typing import Dict
 
 from django import forms
-from django.urls import re_path
 from django.contrib import admin, messages
 from django.db import transaction
 from django.db.models import Count, Max, Prefetch, Q
 from django.http import HttpRequest, HttpResponseRedirect
 from django.shortcuts import render
-from django.urls import NoReverseMatch, reverse
+from django.urls import NoReverseMatch, re_path, reverse
 from django.utils.html import format_html, format_html_join
 from django.utils.translation import gettext_lazy as _
 from import_export import resources
@@ -16,7 +16,6 @@
 from import_export.formats import base_formats
 from moneyed.localization import format_money
 from structlog import get_logger
-from typing import Dict
 
 from .actions import accounts, invoices
 from .models import (
@@ -505,10 +504,10 @@ def get_queryset(self, request):
 
     def get_urls(self):
         custom_urls = [
-            re_path(r'^(?P<invoice_id>[0-9a-f-]+)/assign_funds_to_invoice/$',
+            re_path(r'(?P<invoice_id>[0-9a-f-]+)/assign_funds_to_invoice/',
                     self.admin_site.admin_view(do_assign_funds_to_invoice),
                     name='billing-assign-funds-to-invoice'),
-            re_path(r'^(?P<invoice_id>[0-9a-f-]+)/pay/$',
+            re_path(r'(?P<invoice_id>[0-9a-f-]+)/pay/',
                     self.admin_site.admin_view(do_pay_invoice_with_cc),
                     name='billing-pay-invoice-with-cc')
         ]
@@ -798,12 +797,12 @@ def get_urls(self):
         urls = super().get_urls()
         my_urls = [
             re_path(
-                r'^(?P<account_id>[0-9a-f-]+)/create_invoices/$',
+                r'(?P<account_id>[0-9a-f-]+)/create_invoices/',
                 self.admin_site.admin_view(create_invoices_form),
                 name='billing-create-invoices'
             ),
             re_path(
-                r'^(?P<account_id>[0-9a-f-]+)/assign_funds_to_pending_invoices/$',
+                r'(?P<account_id>[0-9a-f-]+)/assign_funds_to_pending_invoices/',
                 self.admin_site.admin_view(do_assign_funds_to_pending_invoices),
                 name='billing-assign-funds-to-pending-invoices'
             )
diff --git a/setup.py b/setup.py
index 31c73ec..35c50fe 100644
--- a/setup.py
+++ b/setup.py
@@ -37,12 +37,13 @@
         'Development Status :: 5 - Production/Stable',
         'Environment :: Web Environment',
         'Framework :: Django :: 2.2',
-        'Framework :: Django :: 3.0',
+        'Framework :: Django :: 3.1',
         'Intended Audience :: Developers',
         'License :: OSI Approved :: MIT License',
         'Operating System :: OS Independent',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: 3.8',
     ],
 )
diff --git a/tests/urls.py b/tests/urls.py
index 70c9b06..a2cbf25 100644
--- a/tests/urls.py
+++ b/tests/urls.py
@@ -2,6 +2,6 @@
 from django.urls import include, path
 
 urlpatterns = [
-    path(r'^billing/', include('billing.urls')),
-    path(r'^admin/', admin.site.urls),
+    path(r'billing/', include('billing.urls')),
+    path(r'admin/', admin.site.urls),
 ]
diff --git a/tox.ini b/tox.ini
index 3a019ff..fe25d0a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,12 +1,13 @@
 [tox]
 envlist =
-    {py36,py37}-{django22,django30}-test
-    py37-django30-{checkmigrations,flake,mypy,coverage}
+    {py36,py37,py38}-{django22,django31}-test
+    py38-django31-{checkmigrations,flake,mypy,coverage}
 
 [testenv]
 basepython =
     py36: python3.6
     py37: python3.7
+    py38: python3.8
 commands =
     test: py.test tests
     checkmigrations: ./manage.py makemigrations --check --dry-run
@@ -15,7 +16,7 @@ commands =
     coverage: py.test tests --cov=billing
 deps =
     django22: Django>=2.2,<2.3
-    django30: Django>=3.0,<3.1
+    django31: Django>=3.1,<3.2
     django-money
     django-fsm
     djangorestframework