diff --git a/CHANGES.md b/CHANGES.md
index 74bd00a3..25fe6c18 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,6 +1,14 @@
 Release Notes
 
-Version 4.0.0 (Build - 2023030700)
+Release 4.0.1 (Build - 2023051600)
+
+Improvements:
+
+* Moodle 4.2 compatibility:
+** removed event functions fully deprecated in 4.2.
+** added Moodle 4.2 and PHP 8.1 to CI checks.
+
+Release 4.0.0 (Build - 2023030700)
 
 Bug fixes:
 
diff --git a/version.php b/version.php
index e67e6002..138623af 100644
--- a/version.php
+++ b/version.php
@@ -25,10 +25,10 @@
 
 defined('MOODLE_INTERNAL') || die();
 
-$plugin->version = 2022092201;  // The current module version (Date: YYYYMMDDXX).
+$plugin->version = 2022092202;  // The current module version (Date: YYYYMMDDXX).
 $plugin->requires = 2022030300; // Moodle version (4.0).
 
 $plugin->component = 'mod_questionnaire';
 
-$plugin->release = '4.0.0 (Build - 2023030700)';
+$plugin->release = '4.0.1 (Build - 2023051600)';
 $plugin->maturity = MATURITY_STABLE;