diff --git a/libwebp.spec b/libwebp.spec
index 5b65733..7a2b900 100644
--- a/libwebp.spec
+++ b/libwebp.spec
@@ -1,6 +1,6 @@
 Name:          libwebp
 Version:       1.0.0
-Release:       1mamba
+Release:       2mamba
 Summary:       A method of lossy compression that can be used on photographic images
 Group:         System/Libraries
 Vendor:        openmamba
@@ -14,6 +14,7 @@ License:       BSD
 BuildRequires: glibc-devel
 BuildRequires: libGL-devel
 BuildRequires: libfreeglut-devel
+BuildRequires: libgif-devel
 BuildRequires: libjbig-devel
 BuildRequires: libjpeg-devel
 BuildRequires: liblzma-devel
@@ -55,7 +56,10 @@ This package contains utility applications for %{name}.
 %build
 ./autogen.sh
 %configure \
+  --enable-libwebpmux \
   --enable-libwebpdemux \
+  --enable-libwebpdecoder \
+  --enable-libwebpextras \
   --with-pnglibdir=%{_libdir} \
   --disable-static
 
@@ -74,7 +78,9 @@ This package contains utility applications for %{name}.
 %files
 %defattr(-,root,root)
 %{_libdir}/libwebp.so.*
+%{_libdir}/libwebpmux.so.*
 %{_libdir}/libwebpdemux.so.*
+%{_libdir}/libwebpdecoder.so.*
 %doc AUTHORS COPYING
 #ChangeLog NEWS README
 
@@ -82,21 +88,34 @@ This package contains utility applications for %{name}.
 %defattr(-,root,root)
 %dir %{_includedir}/webp
 %{_includedir}/webp/*.h
+%{_libdir}/libwebpdecoder.la
+%{_libdir}/libwebpdecoder.so
+%{_libdir}/libwebpmux.la
+%{_libdir}/libwebpmux.so
 %{_libdir}/libwebp.la
 %{_libdir}/libwebp.so
 %{_libdir}/libwebpdemux.la
 %{_libdir}/libwebpdemux.so
 %{_libdir}/pkgconfig/libwebp.pc
 %{_libdir}/pkgconfig/libwebpdemux.pc
+%{_libdir}/pkgconfig/libwebpdecoder.pc
+%{_libdir}/pkgconfig/libwebpmux.pc
 
 %files tools
 %defattr(-,root,root)
 %{_bindir}/cwebp
 %{_bindir}/dwebp
 %{_bindir}/vwebp
+%{_bindir}/gif2webp
+%{_bindir}/img2webp
+%{_bindir}/webpinfo
+%{_bindir}/webpmux
 %{_mandir}/man1/*
 
 %changelog
+* Thu May 03 2018 Silvan Calarco <silvan.calarco@mambasoft.it> 1.0.0-2mamba
+- rebuilt with --enable-libwebpmux --enable-libwebpdecoder --enable-libwebpextras
+
 * Sun Apr 29 2018 Automatic Build System <autodist@mambasoft.it> 1.0.0-1mamba
 - automatic version update by autodist