diff --git a/misc/ruby-rainbow/Makefile b/misc/ruby-rainbow/Makefile
index 65157f810d16..0523ee598150 100644
--- a/misc/ruby-rainbow/Makefile
+++ b/misc/ruby-rainbow/Makefile
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.2 2014/01/17 18:16:27 tsutsui Exp $
+# $NetBSD: Makefile,v 1.3 2014/01/17 18:58:19 tsutsui Exp $
 #
 
 DISTNAME=	rainbow-1.99.1
@@ -9,6 +9,8 @@ HOMEPAGE=	https://github.com/sickill/rainbow
 COMMENT=	Extends ruby String class enabling coloring text on ANSI terminals
 LICENSE=	mit
 
+RUBY_VERSION_SUPPORTED=	200 193
+
 USE_LANGUAGES=	# none
 
 .include "../../lang/ruby/gem.mk"