diff --git a/src/aphront/configuration/AphrontDefaultApplicationConfiguration.php b/src/aphront/configuration/AphrontDefaultApplicationConfiguration.php
--- a/src/aphront/configuration/AphrontDefaultApplicationConfiguration.php
+++ b/src/aphront/configuration/AphrontDefaultApplicationConfiguration.php
@@ -27,12 +27,16 @@
   }
 
   protected function getResourceURIMapRules() {
+    $extensions = CelerityResourceController::getSupportedResourceTypes();
+    $extensions = array_keys($extensions);
+    $extensions = implode('|', $extensions);
+
     return array(
       '/res/' => array(
         '(?:(?P<mtime>[0-9]+)T/)?'.
         '(?P<library>[^/]+)/'.
         '(?P<hash>[a-f0-9]{8})/'.
-        '(?P<path>.+\.(?:css|js|jpg|png|swf|gif|woff))'
+        '(?P<path>.+\.(?:'.$extensions.'))'
           => 'CelerityPhabricatorResourceController',
       ),
     );
diff --git a/src/infrastructure/celerity/CelerityResourceController.php b/src/infrastructure/celerity/CelerityResourceController.php
--- a/src/infrastructure/celerity/CelerityResourceController.php
+++ b/src/infrastructure/celerity/CelerityResourceController.php
@@ -28,7 +28,7 @@
     }
 
     $type = CelerityResourceTransformer::getResourceType($path);
-    $type_map = $this->getSupportedResourceTypes();
+    $type_map = self::getSupportedResourceTypes();
 
     if (empty($type_map[$type])) {
       throw new Exception("Only static resources may be served.");
@@ -88,7 +88,7 @@
     return $this->makeResponseCacheable($response);
   }
 
-  protected function getSupportedResourceTypes() {
+  public static function getSupportedResourceTypes() {
     return array(
       'css' => 'text/css; charset=utf-8',
       'js'  => 'text/javascript; charset=utf-8',