Index: head/math/cadabra2/Makefile
===================================================================
--- head/math/cadabra2/Makefile
+++ head/math/cadabra2/Makefile
@@ -1,12 +1,10 @@
-# Created by: Yuri Victorovich <yuri@rawbw.com>
 # $FreeBSD$
 
 PORTNAME=	cadabra2
-PORTVERSION=	2.1.5
-PORTREVISION=	3
+DISTVERSION=	2.1.6
 CATEGORIES=	math
 
-MAINTAINER=	yuri@rawbw.com
+MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Computer algebra system for solving field theory problems
 
 LICENSE=	LGPL3
Index: head/math/cadabra2/distinfo
===================================================================
--- head/math/cadabra2/distinfo
+++ head/math/cadabra2/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1502099047
-SHA256 (kpeeters-cadabra2-2.1.5_GH0.tar.gz) = a21f2db951fee83c403e4627ca7deb9982601a610b295586014169c58efc48df
-SIZE (kpeeters-cadabra2-2.1.5_GH0.tar.gz) = 4581957
+TIMESTAMP = 1509811997
+SHA256 (kpeeters-cadabra2-2.1.6_GH0.tar.gz) = 462d902393a7d17637846debcd7205478f46465d418fe3359a450168ad8810e0
+SIZE (kpeeters-cadabra2-2.1.6_GH0.tar.gz) = 4595203
Index: head/math/cadabra2/pkg-plist
===================================================================
--- head/math/cadabra2/pkg-plist
+++ head/math/cadabra2/pkg-plist
@@ -48,6 +48,7 @@
 %%GUI%%%%DATADIR%%/manual/algorithms/join_gamma.cnb
 %%GUI%%%%DATADIR%%/manual/algorithms/keep_weight.cnb
 %%GUI%%%%DATADIR%%/manual/algorithms/lr_tensor.cnb
+%%GUI%%%%DATADIR%%/manual/algorithms/map_sympy.cnb
 %%GUI%%%%DATADIR%%/manual/algorithms/product_rule.cnb
 %%GUI%%%%DATADIR%%/manual/algorithms/reduce_delta.cnb
 %%GUI%%%%DATADIR%%/manual/algorithms/rename_dummies.cnb
@@ -96,6 +97,7 @@
 %%GUI%%%%DATADIR%%/manual/properties/SelfNonCommuting.cnb
 %%GUI%%%%DATADIR%%/manual/properties/SortOrder.cnb
 %%GUI%%%%DATADIR%%/manual/properties/Spinor.cnb
+%%GUI%%%%DATADIR%%/manual/properties/Symbol.cnb
 %%GUI%%%%DATADIR%%/manual/properties/Symmetric.cnb
 %%GUI%%%%DATADIR%%/manual/properties/Tableau.cnb
 %%GUI%%%%DATADIR%%/manual/properties/TableauSymmetry.cnb