diff --git a/libtool.spec b/libtool.spec
index 2cc5789..bfb2ee0 100644
--- a/libtool.spec
+++ b/libtool.spec
@@ -1,8 +1,8 @@
 %define        pkgver %(echo %version | sed "s|[a-z]||")
-%define        gccver 6.2.0
+%define        gccver 7.3.0
 Name:          libtool
 Version:       2.4.6
-Release:       5mamba
+Release:       6mamba
 Summary:       The GNU libtool, which simplifies the use of shared libraries
 Group:         Development/Tools
 Vendor:        openmamba
@@ -117,6 +117,9 @@ This package contains static libraries and header files need for development.
 #%doc ChangeLog* NEWS README THANKS TODO doc/PLATFORMS
 
 %changelog
+* Wed Apr 18 2018 Silvan Calarco <silvan.calarco@mambasoft.it> 2.4.6-6mamba
+- gcc 7.3.0 rebuild
+
 * Sun Aug 28 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 2.4.6-5mamba
 - gcc 6.2.0 rebuild