diff --git a/CHANGELOG.md b/CHANGELOG.md
index c04ade7..0a6698c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,9 +8,13 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ### v3.9.x - [Unreleased]
 
+#### Added
+
+- Set opcache.preload_user for PHP 7.4
+
 #### Fixed
 
-- MySQL databases backup when using remote MySQL server
+- MySQL databases backup when using remote MySQL serverlll
 
 ### v3.11.4 - 2020-01-17
 
diff --git a/wo/cli/plugins/stack_pref.py b/wo/cli/plugins/stack_pref.py
index 9b10bb0..6ad0bcd 100644
--- a/wo/cli/plugins/stack_pref.py
+++ b/wo/cli/plugins/stack_pref.py
@@ -805,6 +805,7 @@ def post_pref(self, apt_packages, packages, upgrade=False):
             config['opcache']['opcache.revalidate_freq'] = '5'
             config['opcache']['opcache.consistency_checks'] = '0'
             config['opcache']['opcache.validate_timestamps'] = '1'
+            config['opcache']['opcache.preload_user'] = 'www-data'
             with open('/etc/php/7.4/fpm/php.ini',
                       encoding='utf-8', mode='w') as configfile:
                 Log.debug(self, "Writting php configuration into "