Index: devel/Makefile
===================================================================
--- devel/Makefile
+++ devel/Makefile
@@ -5227,6 +5227,7 @@
     SUBDIR += rubygem-enumerize
     SUBDIR += rubygem-equalizer
     SUBDIR += rubygem-errand
+    SUBDIR += rubygem-es5-shim-rails
     SUBDIR += rubygem-et-orbi
     SUBDIR += rubygem-event-bus
     SUBDIR += rubygem-eventmachine
Index: devel/rubygem-es5-shim-rails/Makefile
===================================================================
--- /dev/null
+++ devel/rubygem-es5-shim-rails/Makefile
@@ -0,0 +1,21 @@
+# $FreeBSD$
+
+PORTNAME=	es5-shim-rails
+PORTVERSION=	4.0.1
+CATEGORIES=	devel rubygems
+MASTER_SITES=	RG
+
+MAINTAINER=	jrm@FreeBSD.org
+COMMENT=	Asset gem for es5-shim
+
+LICENSE=	MIT
+LICENSE_FILE=	${WRKSRC}/LICENSE.txt
+
+RUN_DEPENDS=	rubygem-railties4>0:www/rubygem-railties4 \
+		rubygem-actionpack4>0:www/rubygem-actionpack4 \
+		rubygem-rails4>0:www/rubygem-rails4
+
+USE_RUBY=	yes
+USES=		gem
+
+.include <bsd.port.mk>
Index: devel/rubygem-es5-shim-rails/distinfo
===================================================================
--- /dev/null
+++ devel/rubygem-es5-shim-rails/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1491426831
+SHA256 (rubygem/es5-shim-rails-4.0.1.gem) = 93b721bef427b9438e171c4d1788a5d13d831d22fa1386b10708a952bed77b9a
+SIZE (rubygem/es5-shim-rails-4.0.1.gem) = 28672
Index: devel/rubygem-es5-shim-rails/pkg-descr
===================================================================
--- /dev/null
+++ devel/rubygem-es5-shim-rails/pkg-descr
@@ -0,0 +1,4 @@
+Asset gem for es5-shim, ECMAScript 5 compatibility shims for legacy (and modern)
+JavaScript engines.
+
+WWW: https://github.com/yourabi/es5-shim-rails/