diff --git a/CHANGELOG.md b/CHANGELOG.md
index a559b00..99345f6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## v.4.0.0
+* Поддержка корпоративных клиентов
+* Поддержка изменения покупателя в заказе
+
 ## v.3.3.9
 * Исправлены цены в ICML
 
diff --git a/README.md b/README.md
index 7ea509f..d453e45 100644
--- a/README.md
+++ b/README.md
@@ -34,12 +34,16 @@ cp -r opencart-module/* /path/to/site/root
 * Fill you api url & api key
 * Specify directories matching
 
+#### Migrating to 4.* from early modules versions
+
+Before you copy the files of module you will to remove the directory `path/to/opencart/system/library/retailcrm`
+
 #### Getting changes in orders
 
 Add to cron:
 
 ```
-*/5 * * * * /usr/bin/php /path/to/opencart/system/cron/history.php >> /path/to/opencart/system/storage/logs/cronjob_history.log 2>&1
+*/5 * * * * /usr/bin/php /path/to/opencart/system/library/retailcrm/cron/history.php >> /path/to/opencart/system/storage/logs/cronjob_history.log 2>&1
 ```
 
 #### Setting product catalog export
@@ -47,7 +51,7 @@ Add to cron:
 Add to cron:
 
 ```
-* */4 * * * /usr/bin/php /path/to/opencart/system/cron/icml.php >> /path/to/opencart/system/storage/logs/cronjob_icml.log 2>&1
+* */4 * * * /usr/bin/php /path/to/opencart/system/library/retailcrm/cron/icml.php >> /path/to/opencart/system/storage/logs/cronjob_icml.log 2>&1
 ```
 
 Your export file will be available by following url
@@ -59,4 +63,4 @@ http://youropencartsite.com/retailcrm.xml
 #### Export existing orders and customers
 
 You want to run this command onecly:
-/usr/bin/php /path/to/opencart/system/cron/export.php
+/usr/bin/php /path/to/opencart/system/library/retailcrm/cron/export.php
diff --git a/README.ru.md b/README.ru.md
index 044d030..89e7299 100644
--- a/README.ru.md
+++ b/README.ru.md
@@ -26,6 +26,10 @@ unzip master.zip
 cp -r opencart-module/* /path/to/site/root
 ```
 
+#### Обновление до 4.* с более ранних версий модуля
+
+Перед копированием файлов модуля необходимо удалить директорию `path/to/opencart/system/library/retailcrm`
+
 #### Активируйте модуль
 
 В списке модулей нажмите "Установить"
@@ -39,7 +43,7 @@ cp -r opencart-module/* /path/to/site/root
 Для получения изменений и новых данных добавьте в cron следующую запись:
 
 ```
-*/5 * * * * /usr/bin/php /path/to/opencart/system/cron/history.php >> /path/to/opencart/system/storage/logs/cronjob_history.log 2>&1
+*/5 * * * * /usr/bin/php /path/to/opencart/system/library/retailcrm/cron/history.php >> /path/to/opencart/system/storage/logs/cronjob_history.log 2>&1
 ```
 
 #### Настройка экспорта каталога
@@ -47,7 +51,7 @@ cp -r opencart-module/* /path/to/site/root
 Для периодической выгрузки каталога добавьте в cron следующую запись:
 
 ```
-* */4 * * * /usr/bin/php /path/to/opencart/system/cron/icml.php >> /path/to/opencart/system/storage/logs/cronjob_icml.log 2>&1
+* */4 * * * /usr/bin/php /path/to/opencart/system/library/retailcrm/cron/icml.php >> /path/to/opencart/system/storage/logs/cronjob_icml.log 2>&1
 ```
 
 В настройках retailCRM установите путь к файлу выгрузки
@@ -60,13 +64,13 @@ http://youropencartsite.com/retailcrm.xml
 Для периодической выгрузки акционных цен в CRM в настройках модуля укажите тип цены, в который необходимо выгружать акционные цены, в крон добавьте следующую запись
 
 ```
-0 0 * * * /usr/bin/php /path/to/opencart/system/cron/prices.php >> /path/to/opencart/system/storage/logs/cronjob_prices.log 2>&1
+0 0 * * * /usr/bin/php /path/to/opencart/system/library/retailcrm/cron/prices.php >> /path/to/opencart/system/storage/logs/cronjob_prices.log 2>&1
 ```
 
 #### Выгрузка существующих заказов и покупателей
 
 Запустите команду единожды:
-/usr/bin/php /path/to/opencart/system/cron/export.php
+/usr/bin/php /path/to/opencart/system/library/retailcrm/cron/export.php
 
 #### Кастомизация моделей
 
diff --git a/VERSION b/VERSION
index 3b47f2e..fcdb2e1 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.3.9
+4.0.0
diff --git a/src/upload/system/cron/.htaccess b/src/upload/system/library/retailcrm/cron/.htaccess
similarity index 56%
rename from src/upload/system/cron/.htaccess
rename to src/upload/system/library/retailcrm/cron/.htaccess
index 437eb07..e300f4e 100644
--- a/src/upload/system/cron/.htaccess
+++ b/src/upload/system/library/retailcrm/cron/.htaccess
@@ -1,4 +1,4 @@
 <Files *.*>
 Allow from all
-Satisfy any 
-</Files>
\ No newline at end of file
+Satisfy any
+</Files>
diff --git a/src/upload/system/cron/dispatch.php b/src/upload/system/library/retailcrm/cron/dispatch.php
similarity index 100%
rename from src/upload/system/cron/dispatch.php
rename to src/upload/system/library/retailcrm/cron/dispatch.php
diff --git a/src/upload/system/cron/export.php b/src/upload/system/library/retailcrm/cron/export.php
similarity index 100%
rename from src/upload/system/cron/export.php
rename to src/upload/system/library/retailcrm/cron/export.php
diff --git a/src/upload/system/cron/history.php b/src/upload/system/library/retailcrm/cron/history.php
similarity index 100%
rename from src/upload/system/cron/history.php
rename to src/upload/system/library/retailcrm/cron/history.php
diff --git a/src/upload/system/cron/icml.php b/src/upload/system/library/retailcrm/cron/icml.php
similarity index 100%
rename from src/upload/system/cron/icml.php
rename to src/upload/system/library/retailcrm/cron/icml.php
diff --git a/src/upload/system/cron/prices.php b/src/upload/system/library/retailcrm/cron/prices.php
similarity index 100%
rename from src/upload/system/cron/prices.php
rename to src/upload/system/library/retailcrm/cron/prices.php