diff --git a/claws-mail.spec b/claws-mail.spec
index 39ee85e..ee25cde 100644
--- a/claws-mail.spec
+++ b/claws-mail.spec
@@ -1,7 +1,7 @@
 %define _distrib_milestone %(echo %_distrib_codename | cut -d- -f1)
 Name:          claws-mail
 Version:       3.17.4
-Release:       1mamba
+Release:       2mamba
 Summary:       An email client (and news reader)
 Group:         Graphical Desktop/Applications/Internet
 Vendor:        openmamba
@@ -64,6 +64,7 @@ BuildRequires: libX11-devel
 BuildRequires: libxml2-devel
 BuildRequires: libz-devel
 BuildRequires: perl-devel
+BuildRequires: libsignon-glib >= 2.1
 ## AUTOBUILDREQ-END
 %if "%{_distrib_milestone}" == "milestone2"
 BuildRequires: gnome-desktop-devel
@@ -223,6 +224,9 @@ echo %_distrib_milestone
 %{_libdir}/pkgconfig/claws-mail.pc
 
 %changelog
+* Wed Nov 06 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 3.17.4-2mamba
+- rebuilt with libsignon-glib 2.1
+
 * Wed Jul 31 2019 Automatic Build System <autodist@mambasoft.it> 3.17.4-1mamba
 - automatic version update by autodist