diff --git a/README.md b/README.md
index 5a66d44..60b2a48 100644
--- a/README.md
+++ b/README.md
@@ -11,13 +11,18 @@ Assuming you have a [Wagtail](https://wagtail.io/) project up and running:
 
 ``` $ pip install wagtailgmaps```
 
-add wagtailgmaps to your `settings.py` in the INSTALLED_APPS section:
+add `wagtailgmaps` and `overextends` to your `settings.py` before any wagtail apps in the INSTALLED_APPS section:
 
 ```
-...
-    'modelcluster',
+    .
+    .
+    'overextends',
     'wagtailgmaps',
-    'wagtail.contrib.wagtailsitemaps',
+    'wagtail.wagtailcore',
+    'wagtail.wagtailadmin',
+    .
+    .
+    .
 ...
 ```
 
diff --git a/setup.py b/setup.py
index a63554f..7168969 100755
--- a/setup.py
+++ b/setup.py
@@ -9,7 +9,7 @@
 
 setup(
     name='wagtailgmaps',
-    version='0.2.4',
+    version='0.2.5',
     packages=['wagtailgmaps'],
     include_package_data=True,
     license='BSD License',
@@ -35,4 +35,5 @@
         'Topic :: Internet :: WWW/HTTP',
         'Topic :: Internet :: WWW/HTTP :: Dynamic Content',
     ],
+    install_requires=['django-overextends'],
 )
diff --git a/wagtailgmaps/templates/wagtailadmin/admin_base.html b/wagtailgmaps/templates/wagtailadmin/admin_base.html
index 1a7d629..40fbe34 100644
--- a/wagtailgmaps/templates/wagtailadmin/admin_base.html
+++ b/wagtailgmaps/templates/wagtailadmin/admin_base.html
@@ -1,34 +1,6 @@
-{% extends "wagtailadmin/skeleton.html" %}
-{% load compress static wagtailadmin_tags %}
-
-{% block css %}
-    {% compress css %}
-        <link rel="stylesheet" href="{% static 'wagtailadmin/css/vendor/jquery-ui/jquery-ui-1.10.3.verdant.css' %}" />
-        <link rel="stylesheet" href="{% static 'wagtailadmin/css/core.css' %}" type="text/css" />
-        <link rel="stylesheet" href="{%  static 'wagtailgmaps/css/admin.css' %}" type="text/css" />
-    {% endcompress %}
-
-    {% block extra_css %}{% endblock %}
-{% endblock %}
-
-{% block branding_favicon %}
-    <link rel="shortcut icon" href="{% static 'wagtailadmin/images/favicon.ico' %}" />
-{% endblock %}
+{% overextends "wagtailadmin/admin_base.html" %}
 
 {% block js %}
     <script src="https://maps.google.com/maps/api/js"></script>
-    {% compress js %}
-        <script src="{% static 'wagtailadmin/js/vendor/jquery-1.10.3.js' %}"></script>
-        <script src="{% static 'wagtailadmin/js/vendor/jquery-ui-1.10.3.js' %}"></script>
-        <script src="{% static 'wagtailadmin/js/vendor/jquery.datetimepicker.js' %}"></script>
-        <script src="{% static 'wagtailadmin/js/vendor/jquery.autosize.js' %}"></script>
-        <script src="{% static 'wagtailadmin/js/vendor/bootstrap-transition.js' %}"></script>
-        <script src="{% static 'wagtailadmin/js/vendor/bootstrap-modal.js' %}"></script>
-        <script src="{% static 'wagtailadmin/js/vendor/bootstrap-tab.js' %}"></script>
-        <script src="{% static 'wagtailadmin/js/vendor/jquery.dlmenu.js' %}"></script>
-        <script src="{% static 'wagtailadmin/js/core.js' %}"></script>
-        {% main_nav_js %}
-    {% endcompress %}
-    
-    {% block extra_js %}{% endblock %}
+    {{ block.super }}
 {% endblock %}
\ No newline at end of file
diff --git a/wagtailgmaps/wagtail_hooks.py b/wagtailgmaps/wagtail_hooks.py
index 9478241..a0eea87 100644
--- a/wagtailgmaps/wagtail_hooks.py
+++ b/wagtailgmaps/wagtail_hooks.py
@@ -18,3 +18,17 @@ def editor_js():
     )
 
     return js_includes
+
+
+@hooks.register('insert_global_admin_css')
+def admin_css():
+    """
+    Add extra CSS files to the admin
+    """
+    css_files = [
+        'wagtailadmin/css/admin.css',
+    ]
+
+    css_includes = format_html_join(
+        '\n', '<link rel="stylesheet" href="{0}{1}">', ((settings.STATIC_URL, filename) for filename in css_files))
+    return css_includes