diff --git a/backup/moodle2/backup_local_adler_plugin.class.php b/backup/moodle2/backup_local_adler_plugin.class.php
index 4406c68..8e63ded 100644
--- a/backup/moodle2/backup_local_adler_plugin.class.php
+++ b/backup/moodle2/backup_local_adler_plugin.class.php
@@ -9,7 +9,7 @@ protected function define_course_plugin_structure(): backup_plugin_element {
 
     // Define each element separated
     $pluginwrapper = new backup_nested_element($this->get_recommended_name(), null, [
-        'plugin_set_version',
+        'plugin_release_set_version',
     ]);
 
     // Moodle does not allow names in nested elements that are used in the root element, therefore "score" is not allowed
@@ -23,7 +23,7 @@ protected function define_course_plugin_structure(): backup_plugin_element {
 
     // Define sources
     // version number according to https://github.com/ProjektAdLer/moodle-docker/blob/main/plugin-releases.json
-    $pluginwrapper->set_source_array([['plugin_set_version' => '4.0.0']]);
+    $pluginwrapper->set_source_array([['plugin_release_set_version' => '4.0.0']]);
     $adler_course->set_source_table('local_adler_course', array('course_id' => backup::VAR_COURSEID));
     // Define id annotations
 
diff --git a/backup/moodle2/restore_local_adler_plugin.class.php b/backup/moodle2/restore_local_adler_plugin.class.php
index ced39d3..06862a4 100644
--- a/backup/moodle2/restore_local_adler_plugin.class.php
+++ b/backup/moodle2/restore_local_adler_plugin.class.php
@@ -13,7 +13,7 @@ class restore_local_adler_plugin extends restore_local_plugin {
     // define_module_plugin_structure, define_grade_item_plugin_structure, define_question_plugin_structure
     protected $db;
 
-    private $plugin_set_version;
+    private $plugin_release_set_version;
     private $log;
 
     public function __construct($name, $plugin, $restore) {
@@ -21,24 +21,24 @@ public function __construct($name, $plugin, $restore) {
         parent::__construct($name, $plugin, $restore);
         $this->db = $DB;
         $this->log = new logger('local_adler', self::class);
-        $this->plugin_set_version = null;
+        $this->plugin_release_set_version = null;
     }
 
     protected function define_course_plugin_structure(): array {
         return [
-            new restore_path_element('plugin_set_version', $this->get_pathfor('/')),
+            new restore_path_element('plugin_release_set_version', $this->get_pathfor('/')),
             new restore_path_element('adler_course', $this->get_pathfor('/adler_course'))
         ];
     }
 
-    public function process_plugin_set_version($data) {
+    public function process_plugin_release_set_version($data) {
         $data = (object)$data;
 
-        if (property_exists($data, 'plugin_set_version') ) {
-            if (version_compare($data->plugin_set_version, '4.0.0', '<')) {
-                throw new moodle_exception('invalid_plugin_set_version', 'local_adler', '', null, 'plugin_set_version is below 3.2.0');
+        if (property_exists($data, 'plugin_release_set_version') ) {
+            if (version_compare($data->plugin_release_set_version, '4.0.0', '<')) {
+                throw new moodle_exception('invalid_plugin_release_set_version', 'local_adler', '', null, 'plugin_release_set_version is below 3.2.0');
             }
-            $this->plugin_set_version = $data->plugin_set_version;
+            $this->plugin_release_set_version = $data->plugin_release_set_version;
         }
     }
 
@@ -137,8 +137,8 @@ public function process_adler_module($data) {
      * @throws not_an_adler_course_exception
      */
     public function after_restore_course() {
-        $this->log->info('Restoring course with plugin set version ' . $this->plugin_set_version);
-        if (empty($this->plugin_set_version)) {
+        $this->log->info('Restoring course with plugin set version ' . $this->plugin_release_set_version);
+        if (empty($this->plugin_release_set_version)) {
             try {
                 (new upgrade_3_2_0_to_4_0_0_completionlib($this->task->get_courseid()))->execute();
             } catch (not_an_adler_course_exception $e) {
diff --git a/classes/local/upgrade/upgrade_3_2_0_to_4_0_0_completionlib.php b/classes/local/upgrade/upgrade_3_2_0_to_4_0_0_completionlib.php
index 8cf29a4..8d1bffb 100644
--- a/classes/local/upgrade/upgrade_3_2_0_to_4_0_0_completionlib.php
+++ b/classes/local/upgrade/upgrade_3_2_0_to_4_0_0_completionlib.php
@@ -2,7 +2,6 @@
 
 namespace local_adler\local\upgrade;
 
-use cm_info;
 use dml_exception;
 use local_adler\helpers;
 use local_adler\local\db\moodle_core_repository;
diff --git a/tests/backup/moodle2/backup_adler_plugin_test.php b/tests/backup/moodle2/backup_adler_plugin_test.php
index 88461d7..ba3feeb 100644
--- a/tests/backup/moodle2/backup_adler_plugin_test.php
+++ b/tests/backup/moodle2/backup_adler_plugin_test.php
@@ -195,7 +195,7 @@ public function test_backup_course_not_adler_course() {
     /**
      * # ANF-ID: [MVP1]
      */
-    public function test_plugin_set_version_property() {
+    public function test_plugin_release_set_version_property() {
         // Create score item with generator
         $adler_course_object = $this
             ->getDataGenerator()
@@ -218,6 +218,6 @@ public function test_plugin_set_version_property() {
         $xml = $this->get_xml_from_backup($bc, 'course');
 
         // Validate xml values
-        $this->assertMatchesRegularExpression('/^\d+\.\d+\.\d+$/', (string)$xml->plugin_local_adler_course->plugin_set_version, 'plugin_set_version should be a valid semantic version');
+        $this->assertMatchesRegularExpression('/^\d+\.\d+\.\d+$/', (string)$xml->plugin_local_adler_course->plugin_release_set_version, 'plugin_release_set_version should be a valid semantic version');
     }
 }
\ No newline at end of file
diff --git a/tests/backup/moodle2/restore_adler_plugin_test.php b/tests/backup/moodle2/restore_adler_plugin_test.php
index 061b482..72b9e2a 100644
--- a/tests/backup/moodle2/restore_adler_plugin_test.php
+++ b/tests/backup/moodle2/restore_adler_plugin_test.php
@@ -247,8 +247,8 @@ public function test_define_course_plugin_structure() {
 
         // verify
         $this->assertCount(2, $paths);
-        $this->assertEquals('adler_course', $paths[0]->get_name());
-        $this->assertStringContainsString('adler_course', $paths[0]->get_path());
+        $this->assertEquals('plugin_release_set_version', $paths[0]->get_name());
+        $this->assertEquals('adler_course', $paths[1]->get_name());
     }
 
     /**
@@ -401,6 +401,7 @@ public function provide_test_call_upgrade_3_2_0_to_4_0_0_completionlib_data() {
 
     /**
      * @dataProvider provide_test_call_upgrade_3_2_0_to_4_0_0_completionlib_data
+     * @runInSeparateProcess
      */
     public function test_call_upgrade_3_2_0_to_4_0_0_completionlib($version) {
         // setup mock
@@ -413,20 +414,20 @@ public function test_call_upgrade_3_2_0_to_4_0_0_completionlib($version) {
 
         if ($version === '1.1.0') {
             $this->expectException(moodle_exception::class);
-            $this->expectExceptionMessage('invalid_plugin_set_version');
+            $this->expectExceptionMessage('invalid_plugin_release_set_version');
         }
 
         // setup data
         list($data, $stub) = $this->setUpCourse();
         if ($version !== null) {
-            $data->plugin_set_version = $version;
+            $data->plugin_release_set_version = $version;
         }
 
         // create test object
         $plugin = new restore_local_adler_plugin('local', 'adler', $stub);
 
         // call the method to test
-        $plugin->process_plugin_set_version($data);
+        $plugin->process_plugin_release_set_version($data);
         $plugin->after_restore_course();
     }
 }
\ No newline at end of file