diff --git a/build/run/installer.sh b/build/run/installer.sh
index ebd59fc..bffbe1d 100755
--- a/build/run/installer.sh
+++ b/build/run/installer.sh
@@ -176,8 +176,8 @@ mkdir -p /etc/dovecot/ /etc/ssl/dovecot/
 
 # dovecot.conf
 cat >/etc/dovecot/dovecot.conf <<- dovecot.conf
-dovecot_config_version = 2.4.3
-dovecot_storage_version = 2.4.3
+dovecot_config_version = 2.4.5
+dovecot_storage_version = 2.4.5
 
 sql_driver = mysql
 mysql /run/mysqld/mysqld.sock {