diff --git a/maintenancemode/middleware.py b/maintenancemode/middleware.py
index dd5234a..5903ba1 100644
--- a/maintenancemode/middleware.py
+++ b/maintenancemode/middleware.py
@@ -4,8 +4,13 @@
 import django
 
 from django.conf import urls
-from django.core import urlresolvers
-
+from django.urls import get_resolver
+try:
+    from django.utils.deprecation import MiddlewareMixin
+except ImportError:
+    # Compatibility for older version of Django
+    MiddlewareMixin = object
+    
 from .conf import settings
 from . import utils as maintenance
 
@@ -15,7 +20,7 @@
 IGNORE_URLS = tuple([re.compile(u) for u in settings.MAINTENANCE_IGNORE_URLS])
 
 
-class MaintenanceModeMiddleware(object):
+class MaintenanceModeMiddleware(MiddlewareMixin):
 
     def process_request(self, request):
         # Allow access if middleware is not activated
@@ -45,7 +50,7 @@ def process_request(self, request):
                 return None
 
         # Otherwise show the user the 503 page
-        resolver = urlresolvers.get_resolver(None)
+        resolver = get_resolver(None)
 
         if django.VERSION < (1, 8):
             callback, param_dict = resolver._resolve_special('503')