Index: head/devel/xeus-cling/Makefile
===================================================================
--- head/devel/xeus-cling/Makefile	(revision 501992)
+++ head/devel/xeus-cling/Makefile	(revision 501993)
@@ -1,28 +1,30 @@
 # $FreeBSD$
 
 PORTNAME=	xeus-cling
 DISTVERSION=	0.5.1
 CATEGORIES=	devel
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	C++ Jupyter Kernel
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+BROKEN_FreeBSD_13=	https://github.com/QuantStack/xeus-cling/issues/234
+
 BUILD_DEPENDS=	cppzmq>0:net/cppzmq \
 		cxxopts>0:devel/cxxopts \
 		llvm-config:lang/cling \
 		nlohmann-json>0:devel/nlohmann-json \
 		xtl-quant-stack>0:devel/xtl-quant-stack
 LIB_DEPENDS=	libclingInterpreter.so:lang/cling \
 		libpugixml.so:textproc/pugixml \
 		libuuid.so:misc/e2fsprogs-libuuid \
 		libxeus.so:devel/xeus \
 		libzmq.so:net/libzmq4
 
 USES=		cmake compiler:c++14-lang pkgconfig ssl
 USE_GITHUB=	yes
 GH_ACCOUNT=	QuantStack
 
 .include <bsd.port.mk>