diff --git a/quiztech-assessment-platform.php b/quiztech-assessment-platform.php
index 34421aa..bbec7f0 100644
--- a/quiztech-assessment-platform.php
+++ b/quiztech-assessment-platform.php
@@ -32,6 +32,13 @@ if ( ! \defined( 'WPINC' ) ) {
  */
 require_once __DIR__ . '/vendor/autoload.php';
 
+/**
+ * Load necessary procedural files not handled by PSR-4 autoloading.
+ */
+require_once QUIZTECH_PLUGIN_DIR . 'src/Includes/roles.php';
+require_once QUIZTECH_PLUGIN_DIR . 'src/Includes/post-types.php';
+require_once QUIZTECH_PLUGIN_DIR . 'src/Includes/taxonomies.php';
+
 /**
  * Load plugin dependencies. (Now handled by autoloading)
  */