Index: head/math/cadabra2/Makefile
===================================================================
--- head/math/cadabra2/Makefile	(revision 562437)
+++ head/math/cadabra2/Makefile	(revision 562438)
@@ -1,47 +1,47 @@
 # $FreeBSD$
 
 PORTNAME=	cadabra2
-DISTVERSION=	2.3.6.2
+DISTVERSION=	2.3.6.4
 CATEGORIES=	math
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Computer algebra system for solving field theory problems
 
 LICENSE=	LGPL3
 LICENSE_FILE=	${WRKSRC}/doc/license.txt
 
 BUILD_DEPENDS=	${LOCALBASE}/include/websocketpp/client.hpp:devel/websocketpp
 LIB_DEPENDS=	${PY_BOOST} \
 		libboost_system.so:devel/boost-libs \
 		libpcrecpp.so:devel/pcre \
 		libjsoncpp.so:devel/jsoncpp \
 		libgmp.so:math/gmp \
 		libuuid.so:misc/e2fsprogs-libuuid
 RUN_DEPENDS=	${PYTHON_SITELIBDIR}/sympy/__init__.py:math/py-sympy@${PY_FLAVOR} \
 		${PYTHON_SITELIBDIR}/matplotlib/__init__.py:math/py-matplotlib@${PY_FLAVOR}
 
 USES=		compiler:c++14-lang cmake:noninja dos2unix gettext-runtime gnome localbase:ldflags pkgconfig python:3.4+ sqlite # USES=python picks random python versions
 USE_GITHUB=	yes
 GH_ACCOUNT=	kpeeters
 DOS2UNIX_FILES=	cmake/version.cmake
 USE_GNOME=	glib20 glibmm libsigc++20
 USE_TEX=	base latex texmf texhash
 OPTIONS_SUB=	yes
 
 CMAKE_ON=	ENABLE_SYSTEM_JSONCPP USE_PYTHON_3 # OFF doesn't work, still links to python3: https://github.com/kpeeters/cadabra2/issues/76
 CMAKE_OFF=	ENABLE_MATHEMATICA
 CXXFLAGS+=	-I${LOCALBASE}/include/jsoncpp
 LDFLAGS+=	-ljsoncpp
 
 OPTIONS_DEFINE=	GUI
 OPTIONS_DEFAULT=	GUI
 
 GUI_USES=	desktop-file-utils
 GUI_USE=	GNOME=gtkmm30,gdkpixbuf2
 GUI_CMAKE_BOOL=	ENABLE_FRONTEND
 GUI_VARS=	INSTALLS_ICONS=yes
 
 post-extract: # unbundle
 	@${RM} -r ${WRKSRC}/libs/jsoncpp ${WRKSRC}/libs/websocketpp
 
 .include <bsd.port.mk>
Index: head/math/cadabra2/distinfo
===================================================================
--- head/math/cadabra2/distinfo	(revision 562437)
+++ head/math/cadabra2/distinfo	(revision 562438)
@@ -1,3 +1,3 @@
-TIMESTAMP = 1609712555
-SHA256 (kpeeters-cadabra2-2.3.6.2_GH0.tar.gz) = 8727500ca814be68c9b583f9686d7807eb9f33e530e31d7480f6f72f36a2263b
-SIZE (kpeeters-cadabra2-2.3.6.2_GH0.tar.gz) = 24542045
+TIMESTAMP = 1611451142
+SHA256 (kpeeters-cadabra2-2.3.6.4_GH0.tar.gz) = f4dc420a823ffc2e783b22c34531e4ffab513a4f7b11d1270ba100e89f40b988
+SIZE (kpeeters-cadabra2-2.3.6.4_GH0.tar.gz) = 24544574