diff --git a/devel/Makefile b/devel/Makefile
index 03a81d9c9d0c..f156071be814 100644
--- a/devel/Makefile
+++ b/devel/Makefile
@@ -5221,6 +5221,7 @@
     SUBDIR += rubygem-multi_test
     SUBDIR += rubygem-murmurhash3
     SUBDIR += rubygem-mustache
+    SUBDIR += rubygem-mustermann
     SUBDIR += rubygem-mutter
     SUBDIR += rubygem-naught
     SUBDIR += rubygem-needle
diff --git a/devel/rubygem-mustermann/Makefile b/devel/rubygem-mustermann/Makefile
new file mode 100644
index 000000000000..05af72ee0097
--- /dev/null
+++ b/devel/rubygem-mustermann/Makefile
@@ -0,0 +1,20 @@
+# Created by: Sunpoet Po-Chuan Hsieh <sunpoet@FreeBSD.org>
+# $FreeBSD$
+
+PORTNAME=	mustermann
+PORTVERSION=	0.4.0
+CATEGORIES=	devel rubygems
+MASTER_SITES=	RG
+
+MAINTAINER=	sunpoet@FreeBSD.org
+COMMENT=	Lbrary implementing patterns that behave like regular expressions
+
+LICENSE=	MIT
+
+RUN_DEPENDS=	rubygem-tool>=0.2:devel/rubygem-tool
+
+NO_ARCH=	yes
+USE_RUBY=	yes
+USES=		gem
+
+.include <bsd.port.mk>
diff --git a/devel/rubygem-mustermann/distinfo b/devel/rubygem-mustermann/distinfo
new file mode 100644
index 000000000000..ee8c8675d14d
--- /dev/null
+++ b/devel/rubygem-mustermann/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1480770404
+SHA256 (rubygem/mustermann-0.4.0.gem) = 28d2471ac8498d82f505b912d8886ac29e279abf43567b4a8095da3aee3fa24e
+SIZE (rubygem/mustermann-0.4.0.gem) = 46592
diff --git a/devel/rubygem-mustermann/pkg-descr b/devel/rubygem-mustermann/pkg-descr
new file mode 100644
index 000000000000..95af5d3fe643
--- /dev/null
+++ b/devel/rubygem-mustermann/pkg-descr
@@ -0,0 +1,8 @@
+Mustermann is your personal string matching expert. As an expert in the field of
+strings and patterns, Mustermann keeps its runtime dependencies to a minimum and
+is fully covered with specs and documentation.
+
+Given a string pattern, Mustermann will turn it into an object that behaves like
+a regular expression and has comparable performance characteristics.
+
+WWW: https://github.com/sinatra/mustermann/tree/master/mustermann