diff --git a/dovecot/dovecot.spec b/dovecot/dovecot.spec
index e80d751df7..96660de1b7 100644
--- a/dovecot/dovecot.spec
+++ b/dovecot/dovecot.spec
@@ -23,8 +23,8 @@
 
 #   package version
 %define       V_major       2.3
-%define       V_minor       3
-%define       V_pigeonhole  0.5.3
+%define       V_minor       4
+%define       V_pigeonhole  0.5.4
 
 #   package information
 Name:         dovecot
@@ -37,7 +37,7 @@ Class:        PLUS
 Group:        Mail
 License:      MIT+LGPL
 Version:      %{V_major}.%{V_minor}
-Release:      20181002
+Release:      20181124
 
 #   package options
 %option       with_fsl          yes
@@ -54,6 +54,7 @@ Source1:      https://pigeonhole.dovecot.org/releases/%{V_major}/dovecot-%{V_maj
 Source2:      fsl.dovecot
 Source3:      rc.dovecot
 Source4:      dovecot.conf
+Patch0:       dovecot.patch
 
 #   build information
 BuildPreReq:  OpenPKG, openpkg >= 20160101
@@ -112,6 +113,7 @@ PreReq:       sqlite
 %if "%{with_sieve}" == "yes"
     %setup -q -n dovecot-%{version} -T -D -a 1
 %endif
+    %patch -p0
 
 %build
     #   build Dovecot