diff --git a/Compiler/root/6/variants b/Compiler/root/6/variants
index 76eaacd..4eff74a 100644
--- a/Compiler/root/6/variants
+++ b/Compiler/root/6/variants
@@ -10,3 +10,5 @@ root/6.08.02         unstable   gcc/4.8.5 b:Python/2.7.12 b:gsl/2.2.1 b:cmake/3.
 root/6.08.02         unstable   gcc/4.9.4 b:Python/2.7.12 b:gsl/2.2.1 b:cmake/3.6.3
 root/6.08.02         unstable   gcc/5.4.0 b:Python/2.7.12 b:gsl/2.2.1 b:cmake/3.6.3
 root/6.08.02         unstable   gcc/6.2.0 b:Python/2.7.12 b:gsl/2.2.1 b:cmake/3.6.3
+
+root/6.12.06	unstable	gcc/7.3.0 b:Python/2.7.12 b:gsl/2.4 b:cmake/3.6.3