diff --git a/tests/repository/import_data_test.php b/tests/repository/import_data_test.php
index b284b30..bfa7e1a 100644
--- a/tests/repository/import_data_test.php
+++ b/tests/repository/import_data_test.php
@@ -28,10 +28,16 @@
 
 global $CFG;
 
-require_once('./mod/verbalfeedback/classes/vendor/autoload.php');
-
 use Dallgoot\Yaml;
 
+require_once($CFG->dirroot . '/mod/verbalfeedback/classes/vendor/dallgoot/yaml/src/Loader.php');
+require_once($CFG->dirroot . '/mod/verbalfeedback/classes/vendor/dallgoot/yaml/src/Nodes/Root.php');
+require_once($CFG->dirroot . '/mod/verbalfeedback/classes/vendor/dallgoot/yaml/src/Nodes/Key.php');
+require_once($CFG->dirroot . '/mod/verbalfeedback/classes/vendor/dallgoot/yaml/src/Nodes/Generic/NodeGeneric.php');
+require_once($CFG->dirroot . '/mod/verbalfeedback/classes/vendor/dallgoot/yaml/src/Dumper.php');
+require_once($CFG->dirroot . '/mod/verbalfeedback/classes/vendor/dallgoot/yaml/src/NodeFactory.php');
+require_once($CFG->dirroot . '/mod/verbalfeedback/classes/vendor/dallgoot/yaml/src/Regex.php');
+
 use mod_verbalfeedback\model\language;
 use mod_verbalfeedback\model\localized_string;
 use mod_verbalfeedback\model\template\parametrized_template_category;