diff --git a/bootstrap.php b/bootstrap.php
index bc82d57..6e9e3f2 100644
--- a/bootstrap.php
+++ b/bootstrap.php
@@ -9,6 +9,6 @@
 
 // Add this loader.
 Underpin::attach( 'setup', new \Underpin\Factories\Observers\Loader( 'post_templates', [
-	'instance' => 'Underpin\Post_Templates\Abstracts\Post_Template',
-	'default'  => 'Underpin\Post_Templates\Factories\Post_Template_Instance',
+	'abstraction_class' => 'Underpin\Post_Templates\Abstracts\Post_Template',
+	'default_factory'  => 'Underpin\Post_Templates\Factories\Post_Template_Instance',
 ] ) );
\ No newline at end of file