diff --git a/eclass/ruby-ng.eclass b/eclass/ruby-ng.eclass
index a6c4c3396b378..0b0ee696d50d9 100644
--- a/eclass/ruby-ng.eclass
+++ b/eclass/ruby-ng.eclass
@@ -71,6 +71,9 @@ case ${EAPI} in
 	2|3|4|5)
 		inherits="eutils"
 		;;
+	6)
+		inherits="estack"
+		;;
 esac
 
 inherit ${inherits} multilib toolchain-funcs ruby-utils