diff --git a/build/run/installer.sh b/build/run/installer.sh
index eaaf904..8bed5ac 100755
--- a/build/run/installer.sh
+++ b/build/run/installer.sh
@@ -170,8 +170,8 @@ mkdir -p /etc/dovecot/ /etc/ssl/dovecot/
 
 # dovecot.conf
 cat >/etc/dovecot/dovecot.conf <<- dovecot.conf
-dovecot_config_version = 2.4.1
-dovecot_storage_version = 2.4.1
+dovecot_config_version = 2.4.2
+dovecot_storage_version = 2.4.2
 
 sql_driver = mysql
 mysql /run/mysqld/mysqld.sock {