diff --git a/src/Control/Director.php b/src/Control/Director.php
index 0790d0b99..c41a2c8f0 100644
--- a/src/Control/Director.php
+++ b/src/Control/Director.php
@@ -6,6 +6,7 @@ use SilverStripe\CMS\Model\SiteTree;
 use SilverStripe\Control\Middleware\HTTPMiddlewareAware;
 use SilverStripe\Core\Config\Configurable;
 use SilverStripe\Core\Environment;
+use SilverStripe\Core\Extensible;
 use SilverStripe\Core\Injector\Injectable;
 use SilverStripe\Core\Injector\Injector;
 use SilverStripe\Core\Kernel;
@@ -32,6 +33,7 @@ use SilverStripe\View\TemplateGlobalProvider;
 class Director implements TemplateGlobalProvider
 {
     use Configurable;
+    use Extensible;
     use Injectable;
     use HTTPMiddlewareAware;
 
@@ -104,6 +106,11 @@ class Director implements TemplateGlobalProvider
      */
     protected static $environment_type;
 
+    public function __construct()
+    {
+        $this->constructExtensions();
+    }
+
     /**
      * Test a URL request, returning a response object. This method is a wrapper around
      * Director::handleRequest() to assist with functional testing. It will execute the URL given, and
@@ -313,6 +320,8 @@ class Director implements TemplateGlobalProvider
 
         $rules = Director::config()->uninherited('rules');
 
+        $this->extend('updateRules', $rules);
+
         // Default handler - mo URL rules matched, so return a 404 error.
         $handler = function () {
             return new HTTPResponse('No URL rule was matched', 404);