diff --git a/maildrop.spec b/maildrop.spec
index ecf50c4..2a2e249 100644
--- a/maildrop.spec
+++ b/maildrop.spec
@@ -1,6 +1,6 @@
 Name:          maildrop
 Version:       3.1.6
-Release:       1mamba
+Release:       2mamba
 Summary:       The mail filter/mail deilvery agent that's used by the Courier Mail Server
 Group:         System/Servers
 Vendor:        openmamba
@@ -19,6 +19,7 @@ BuildRequires: libidn2-devel
 BuildRequires: libpcre2-devel
 BuildRequires: libstdc++6-devel
 ## AUTOBUILDREQ-END
+BuildRequires: libcourier-unicode-devel >= 2.3.0-1mamba
 BuildRequires: libgdbm-devel >= 1.8.3
 BuildRequires: libcourier-authlib-devel >= 0.71.3
 Obsoletes:     maildrop-devel < 3.0.3
@@ -151,6 +152,9 @@ This is the development package.
 %{_docdir}/maildrop/html/*
 
 %changelog
+* Wed Jan 10 2024 Automatic Build System <autodist@mambasoft.it> 3.1.6-2mamba
+- rebuilt by autoport with build requirements: libcourier-unicode-devel>=2.3.0-1mamba
+
 * Tue Aug 15 2023 Automatic Build System <autodist@mambasoft.it> 3.1.6-1mamba
 - automatic version update by autodist