diff --git a/mlt.spec b/mlt.spec
index bf10b4c..0701ebc 100644
--- a/mlt.spec
+++ b/mlt.spec
@@ -1,6 +1,6 @@
 Name:          mlt
 Version:       6.4.1
-Release:       2mamba
+Release:       3mamba
 Summary:       An open source multimedia framework, designed and developed for television broadcasting
 Group:         Development/Tools
 Vendor:        openmamba
@@ -41,6 +41,7 @@ BuildRequires: libswscale-ffmpeg-devel
 BuildRequires: libxml2-devel
 BuildRequires: sox-devel
 ## AUTOBUILDREQ-END
+BuildRequires: librtaudio-devel >= 5.0.0-1mamba
 BuildRequires: ladspa-devel
 BuildRequires: frei0r-plugins-devel
 BuildRequires: sox-devel >= 14.4.2
@@ -107,6 +108,9 @@ CFLAGS="-I%{_includedir}/ffmpeg" %make
 %{_libdir}/libmlt++.so
 
 %changelog
+* Mon Nov 27 2017 Silvan Calarco <silvan.calarco@mambasoft.it> 6.4.1-3mamba
+- rebuilt by autoport with build requirements: librtaudio-devel>=5.0.0-1mamba
+
 * Tue Oct 24 2017 Silvan Calarco <silvan.calarco@mambasoft.it> 6.4.1-2mamba
 - added patch to fix devel with glibc 2.26 (xlocale.h removed)