diff --git a/firefox.spec b/firefox.spec
index 9aec1fb..c8a7745 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -16,7 +16,7 @@
 
 Name:          firefox
 Version:       47.0
-Release:       1mamba
+Release:       2mamba
 Epoch:         1
 Summary:       The next generation browsing technology from mozilla.org
 Group:         Graphical Desktop/Applications/Internet
@@ -210,7 +210,7 @@ export MOZILLA_OFFICIAL="1"
   --enable-svg-renderer=cairo \
   --with-pthreads \
   --with-java-bin-path=%{_bindir} \
-  --enable-default-toolkit=cairo-gtk2  \
+  --enable-default-toolkit=cairo-gtk3  \
   --with-qtdir=%{_qt3_prefix} \
   --enable-ldap \
   --enable-application=browser \
@@ -485,9 +485,11 @@ fi
 %{_libdir}/firefox-*/Throbber-small.gif
 %{_libdir}/firefox-*/icons/updater.png
 #%{_libdir}/firefox-*/libmozalloc.so
+%{_libdir}/firefox-*/gtk2/libmozgtk.so
 %{_libdir}/firefox-*/liblgpllibs.so
 %{_libdir}/firefox-*/libmozavcodec.so
 %{_libdir}/firefox-*/libmozavutil.so
+%{_libdir}/firefox-*/libmozgtk.so
 %{_libdir}/firefox-*/libmozsqlite3.so
 %{_libdir}/firefox-*/libxul.so
 %{_libdir}/firefox-*/omni.ja
@@ -1753,6 +1755,9 @@ Zulu language support for Firefox.
 #%{firefoxappdir}/browser/extensions/langpack-zu@firefox.mozilla.org/
 
 %changelog
+* Thu Jun 23 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 47.0-2mamba
+- rebuilt with cairo-gtk3
+
 * Wed Jun 22 2016 Automatic Build System <autodist@mambasoft.it> 47.0-1mamba
 - automatic version update by autodist