Index: www/Makefile
===================================================================
--- www/Makefile
+++ www/Makefile
@@ -1798,6 +1798,7 @@
     SUBDIR += rubygem-bootstrap-sass
     SUBDIR += rubygem-browser
     SUBDIR += rubygem-cal-heatmap-rails
+    SUBDIR += rubygem-cal-heatmap-rails-rails4
     SUBDIR += rubygem-carrierwave
     SUBDIR += rubygem-cgi_multipart_eof_fix
     SUBDIR += rubygem-chosen-rails
Index: www/rubygem-cal-heatmap-rails-rails4/Makefile
===================================================================
--- /dev/null
+++ www/rubygem-cal-heatmap-rails-rails4/Makefile
@@ -0,0 +1,21 @@
+# $FreeBSD$
+
+PORTNAME=	cal-heatmap-rails
+PORTVERSION=	3.5.1
+CATEGORIES=	www rubygems
+MASTER_SITES=	RG
+PKGNAMESUFFIX=	-rails4
+
+MAINTAINER=	ruby@FreeBSD.org
+COMMENT=	Calendar heatmap assets for Rails
+
+LICENSE=	MIT
+LICENSE_FILE=	${WRKSRC}/LICENSE.md
+
+RUN_DEPENDS=	rubygem-d3_rails-rails4>0:${PORTSDIR}/www/rubygem-d3_rails-rails4
+
+USE_RUBY=	yes
+USE_RUBYGEMS=	yes
+RUBYGEM_AUTOPLIST=	yes
+
+.include <bsd.port.mk>
Index: www/rubygem-cal-heatmap-rails-rails4/distinfo
===================================================================
--- /dev/null
+++ www/rubygem-cal-heatmap-rails-rails4/distinfo
@@ -0,0 +1,2 @@
+SHA256 (rubygem/cal-heatmap-rails-3.5.1.gem) = 1c8846e85979e453faeb1d16aad339f7f2932cdb69b91471beb3c738a4673553
+SIZE (rubygem/cal-heatmap-rails-3.5.1.gem) = 37888
Index: www/rubygem-cal-heatmap-rails-rails4/pkg-descr
===================================================================
--- /dev/null
+++ www/rubygem-cal-heatmap-rails-rails4/pkg-descr
@@ -0,0 +1,5 @@
+Cal-Heatmap is a JavaScript module to create calendar heatmaps
+to visualize time series data. This gem packages it for the
+Rails asset pipeline.
+
+WWW: https://github.com/pavolzbell/cal-heatmap-rails