diff --git a/xfce4-mixer.spec b/xfce4-mixer.spec
index e79c3a9..212cf9d 100644
--- a/xfce4-mixer.spec
+++ b/xfce4-mixer.spec
@@ -1,7 +1,7 @@
 %define majver %(echo %version | cut -d. -f1-2)
 Name:          xfce4-mixer
 Version:       4.11.0
-Release:       1mamba
+Release:       2mamba
 Summary:       Volume control plugin for the Xfce 4 panel
 Group:         Graphical Desktop/Applications/Multimedia
 Vendor:        openmamba
@@ -52,6 +52,7 @@ BuildRequires: udev-devel
 BuildRequires: xfce4-panel-devel
 BuildRequires: xfconf-devel
 ## AUTOBUILDREQ-END
+BuildRequires: libxfce4util-devel >= 4.12.1-1mamba
 BuildRequires: libunique1-devel
 BuildRequires: libxfce4ui-devel
 Requires:      xfce4-panel >= 4.4.0
@@ -105,6 +106,9 @@ fi
 #ChangeLog NEWS README
 
 %changelog
+* Thu Mar 26 2015 Silvan Calarco <silvan.calarco@mambasoft.it> 4.11.0-2mamba
+- rebuilt by autoport with build requirements: libxfce4util-devel>=4.12.1-1mamba
+
 * Thu Oct 09 2014 Automatic Build System <autodist@mambasoft.it> 4.11.0-1mamba
 - automatic version update by autodist