diff --git a/go.spec b/go.spec
index 6239bf0..ba6b50f 100644
--- a/go.spec
+++ b/go.spec
@@ -1,7 +1,7 @@
 #% define with_pie 1
 Name:          go
 Version:       1.10.3
-Release:       1mamba
+Release:       2mamba
 Summary:       The Go programming language
 Group:         Applications/Development
 Vendor:        openmamba
@@ -18,7 +18,7 @@ BuildRequires: ldconfig
 BuildRequires: libperl
 BuildRequires: perl-devel
 ## AUTOBUILDREQ-END
-Conflicts:     gcc-go
+BuildRequires: gcc-go >= 8.1.0
 Provides:      go
 %if "%{with_pie}" == "1"
 Conflicts:     go
@@ -116,6 +116,9 @@ rm -rf %{buildroot}%{_libdir}/go/src/*.rc
 #%doc README.md
 
 %changelog
+* Sun Jun 24 2018 Silvan Calarco <silvan.calarco@mambasoft.it> 1.10.3-2mamba
+- rebuilt with libgo 8.1.0
+
 * Fri Jun 08 2018 Automatic Build System <autodist@mambasoft.it> 1.10.3-1mamba
 - automatic version update by autodist