diff --git a/requirements.txt b/requirements.txt
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,9 +4,9 @@
 
 # Runtime dependencies
 beautifulsoup4
-Django >= 1.11.0, < 2.0
+django < 3
 django-cors-headers
-djangorestframework >= 3.4.0
+djangorestframework
 django_webpack_loader
 django_js_reverse
 docutils
diff --git a/swh/web/common/exc.py b/swh/web/common/exc.py
--- a/swh/web/common/exc.py
+++ b/swh/web/common/exc.py
@@ -64,31 +64,31 @@
                   status=error_code)
 
 
-def swh_handle400(request):
+def swh_handle400(request, exception=None):
     """
     Custom Django HTTP error 400 handler for swh-web.
     """
-    error_description = 'The server cannot process the request to %s due to '\
-                        'something that is perceived to be a client error.' %\
-                        escape(request.META['PATH_INFO'])
+    error_description = ('The server cannot process the request to %s due to '
+                         'something that is perceived to be a client error.' %
+                         escape(request.META['PATH_INFO']))
     return _generate_error_page(request, 400, error_description)
 
 
-def swh_handle403(request):
+def swh_handle403(request, exception=None):
     """
     Custom Django HTTP error 403 handler for swh-web.
     """
-    error_description = 'The resource %s requires an authentication.' %\
-                        escape(request.META['PATH_INFO'])
+    error_description = ('The resource %s requires an authentication.' %
+                         escape(request.META['PATH_INFO']))
     return _generate_error_page(request, 403, error_description)
 
 
-def swh_handle404(request):
+def swh_handle404(request, exception=None):
     """
     Custom Django HTTP error 404 handler for swh-web.
     """
-    error_description = 'The resource %s could not be found on the server.' %\
-                        escape(request.META['PATH_INFO'])
+    error_description = ('The resource %s could not be found on the server.' %
+                         escape(request.META['PATH_INFO']))
     return _generate_error_page(request, 404, error_description)
 
 
@@ -96,9 +96,9 @@
     """
     Custom Django HTTP error 500 handler for swh-web.
     """
-    error_description = 'An unexpected condition was encountered when '\
-                        'requesting resource %s.' %\
-                        escape(request.META['PATH_INFO'])
+    error_description = ('An unexpected condition was encountered when '
+                         'requesting resource %s.' %
+                         escape(request.META['PATH_INFO']))
     return _generate_error_page(request, 500, error_description)
 
 
diff --git a/tox.ini b/tox.ini
--- a/tox.ini
+++ b/tox.ini
@@ -1,11 +1,13 @@
 [tox]
-envlist=flake8,mypy,py3
+envlist=flake8,mypy,py3-django{1,2}
 
 [testenv]
 extras =
   testing
 deps =
   pytest-cov
+  django1: django>=1.11,<2
+  django2: django>=2,<3
 commands =
   pytest \
     slow:  --hypothesis-profile=swh-web \