diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..8ccb52d
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,16 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+## [2.4.0] - 2017-12-26
+### Added
+- This CHANGELOG.md file
+- Support for PHP 7
+- SHA1 hash algorithm support
+- Groups option
+- Supervisor option
+
+### Changed
+- Supported version of ownCloud, Nextcloud: ownCloud 10, Nextcloud 12
diff --git a/appinfo/info.xml b/appinfo/info.xml
index fc26ac3..6224e24 100644
--- a/appinfo/info.xml
+++ b/appinfo/info.xml
@@ -1,16 +1,16 @@
 <?xml version="1.0"?>
 <info>
-       <id>user_sql_2</id>
-       <name>SQL user backend 2</name>
+       <id>user_sql</id>
+       <name>SQL user backend</name>
        <summary>Authenticate users by SQL queries.</summary>
        <description>Authenticate users by SQL queries.</description>
-       <version>1.0.0</version>
+       <version>2.4.0</version>
        <licence>agpl</licence>
        <author>Andreas Boehler &lt;dev (at) aboehler (dot) at &gt;</author>
        <namespace>user_sql</namespace>
        <bugs>https://github.com/mlojewski-me/user_sql/issues</bugs>
        <repository>https://github.com/mlojewski-me/user_sql</repository>
-       <screenshot>https://raw.githubusercontent.com/mlojewski-me/user_sql/2_v1.0.0/screenshot.png</screenshot>
+       <screenshot>https://raw.githubusercontent.com/mlojewski-me/user_sql/v2.4.0/screenshot.png</screenshot>
        <types>
        		<authentication/>
        </types>
diff --git a/appinfo/update.php b/appinfo/update.php
new file mode 100644
index 0000000..c5ae8a2
--- /dev/null
+++ b/appinfo/update.php
@@ -0,0 +1,73 @@
+<?php
+
+/**
+ * ownCloud - user_sql
+ *
+ * @author Andreas Böhler and contributors
+ * @copyright 2012-2015 Andreas Böhler <dev (at) aboehler (dot) at>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+ 
+$installedVersion = \OC::$server->getConfig()->getAppValue('user_sql', 'installed_version');
+
+$params = array('sql_host' => 'sql_hostname', 
+                'sql_user' => 'sql_username',
+                'sql_database' => 'sql_database',
+                'sql_password' => 'sql_password', 
+                'sql_table' => 'sql_table',
+                'sql_column_username' => 'col_username',
+                'sql_column_password' => 'col_password',
+                'sql_type' => 'sql_driver', 
+                'sql_column_active' => 'col_active',
+                'sql_column_supervisor' => 'supervisor',
+                'sql_supervisor' => 'set_supervisor',
+                'strip_domain' => 'set_strip_domain',
+                'default_domain' => 'set_default_domain',
+                'crypt_type' => 'set_crypt_type', 
+                'sql_column_displayname' => 'col_displayname',
+                'allow_password_change' => 'set_allow_pwchange',
+                'sql_column_active_invert' => 'set_active_invert',
+                'sql_column_email' => 'col_email',
+                'mail_sync_mode' => 'set_mail_sync_mode'
+                );
+                
+$delParams = array('domain_settings', 
+                   'map_array', 
+                   'domain_array'
+                  );
+
+if(version_compare($installedVersion, '1.99', '<'))
+{
+    foreach($params as $oldPar => $newPar)
+    {
+        $val = \OC::$server->getConfig()->getAppValue('user_sql', $oldPar);
+        if(($oldPar === 'strip_domain') || ($oldPar === 'allow_password_change') || ($oldPar === 'sql_column_active_invert'))
+        {
+            if($val)
+                $val = 'true';
+            else
+                $val = 'false';
+        }
+        if($val)
+            \OC::$server->getConfig()->setAppValue('user_sql', $newPar.'_default', $val);
+        \OC::$server->getConfig()->deleteAppValue('user_sql', $oldPar);
+    }
+
+    foreach($delParams as $param)
+    {
+        \OC::$server->getConfig()->deleteAppValue('user_sql', $param);
+    }
+}