diff --git a/lib/os/class.ISPConfigDebianOS.inc.php b/lib/os/class.ISPConfigDebianOS.inc.php
index 44ce32f4d1cfd054cabad20fb5591f4bf916d490..74d1aac68266f59c770916a0883dc87bb42d854d 100644
--- a/lib/os/class.ISPConfigDebianOS.inc.php
+++ b/lib/os/class.ISPConfigDebianOS.inc.php
@@ -213,7 +213,11 @@ class ISPConfigDebianOS extends ISPConfigBaseOS {
 			'/etc/php/7.3/cgi/php.ini',
 			'/etc/php/7.3/cli/php.ini',
 			'/etc/php/7.3/fpm/php.ini',
-			'/etc/php/7.3/apache2/php.ini'
+			'/etc/php/7.3/apache2/php.ini',
+			'/etc/php/7.4/cgi/php.ini',
+			'/etc/php/7.4/cli/php.ini',
+			'/etc/php/7.4/fpm/php.ini',
+			'/etc/php/7.4/apache2/php.ini'
 		);
 		
 		$replace = array(
@@ -754,7 +758,8 @@ mailman-unsubscribe:  "|/var/lib/mailman/mail/mailman unsubscribe mailman"';
 				'7.0',
 				'7.1',
 				'7.2',
-				'7.3'
+				'7.3',
+				'7.4'
 			);
 		}