diff --git a/net/rsocket-cpp/Makefile b/net/rsocket-cpp/Makefile
index e2bb5dd10b92..9bfbe9ebdaa2 100644
--- a/net/rsocket-cpp/Makefile
+++ b/net/rsocket-cpp/Makefile
@@ -1,38 +1,40 @@
 PORTNAME=	rsocket-cpp
 DISTVERSIONPREFIX=	v
 DISTVERSION=	2021.08.30.00
 CATEGORIES=	net
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	C++ implementation of RSocket
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
+BROKEN=		build fails with latest devel/folly, no upstream support provided: https://github.com/rsocket/rsocket-cpp/issues/906
+
 BUILD_DEPENDS=	libfmt>0:devel/libfmt
 LIB_DEPENDS=	libboost_atomic.so:devel/boost-libs \
 		libdouble-conversion.so:devel/double-conversion \
 		libevent.so:devel/libevent \
 		libfolly.so:devel/folly \
 		libgflags.so:devel/gflags \
 		libglog.so:devel/glog \
 		liblz4.so:archivers/liblz4 \
 		libsnappy.so:archivers/snappy \
 		libsodium.so:security/libsodium \
 		libunwind.so:devel/libunwind \
 		libzstd.so:archivers/zstd
 
 USES=		cmake compiler:c++14-lang ssl
 USE_GITHUB=	yes
 GH_ACCOUNT=	rsocket
 USE_LDCONFIG=	yes
 
 CMAKE_ON=	BUILD_SHARED_LIBS
 CMAKE_OFF=	BUILD_BENCHMARKS BUILD_EXAMPLES BUILD_TESTS BUILD_EXAMPLES
 
 PORTSCOUT=	limit:^[0-9\.]*$$
 
 post-install: # https://github.com/rsocket/rsocket-cpp/issues/890
 	@cd ${STAGEDIR}${LOCALBASE} && ${RM} -r include/rsocket/examples include/rsocket/test include/yarpl/cmake include/yarpl/perf include/yarpl/test
 
 .include <bsd.port.mk>