diff --git a/sandbox/sandbox/settings.py b/sandbox/sandbox/settings.py
index 0656566..306dde4 100644
--- a/sandbox/sandbox/settings.py
+++ b/sandbox/sandbox/settings.py
@@ -168,3 +168,5 @@ BASE_URL = 'http://example.com'
 INTERNAL_IPS = ['127.0.0.1']
 
 DEFAULT_AUTO_FIELD = 'django.db.models.AutoField'
+
+WAGTAILADMIN_BASE_URL = 'http://localhost:8000/admin'
diff --git a/setup.py b/setup.py
index e8f67fb..3cfcbfc 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@ import re
 from setuptools import find_packages, setup
 
 install_requires = [
-    'wagtail>=2.15,<3.0',
+    'wagtail>=2.15,<4.0',
     'user-agents>=1.1.0',
     'wagtailfontawesome>=1.1.3',
     'pycountry',