diff --git a/swh/deposit/urls.py b/swh/deposit/urls.py
index 22c5a4c6..1c57bfa1 100644
--- a/swh/deposit/urls.py
+++ b/swh/deposit/urls.py
@@ -1,35 +1,44 @@
-# Copyright (C) 2017-2019  The Software Heritage developers
+# Copyright (C) 2017-2021  The Software Heritage developers
 # See the AUTHORS file at the top-level directory of this distribution
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 """SWH's main deposit URL Configuration
 
 """
+from __future__ import annotations
 
 from typing import Sequence, Union
 
 from django.conf.urls import include, url
 from django.shortcuts import render
-from django.urls import URLPattern, URLResolver
 from django.views.generic.base import RedirectView
 from rest_framework.urlpatterns import format_suffix_patterns
 
+try:
+    from django.urls import URLPattern, URLResolver
+except ImportError:
+    # retro-compatibility workaround, django 1.11.29 [1] does not expose the previous
+    # module, so we fallback to no typing for such version.
+    # [1] django debian stable version: 1:1.11.29-1~deb10u1
+    pass
+
+
 favicon_view = RedirectView.as_view(
     url="/static/img/icons/swh-logo-32x32.png", permanent=True
 )
 
 
 def default_view(req):
     return render(req, "homepage.html")
 
 
 urlpatterns: Sequence[Union[URLPattern, URLResolver]]
 urlpatterns = format_suffix_patterns(
     [
         url(r"^favicon\.ico$", favicon_view),
         url(r"^1/", include("swh.deposit.api.urls")),
         url(r"^1/private/", include("swh.deposit.api.private.urls")),
         url(r"^$", default_view, name="home"),
     ]
 )