diff --git a/net-im/tg_owt/Makefile b/net-im/tg_owt/Makefile
index 2db259476edd..fb1bc2e21067 100644
--- a/net-im/tg_owt/Makefile
+++ b/net-im/tg_owt/Makefile
@@ -1,38 +1,38 @@
 # Created by: Henry Hu <henry.hu.sh@gmail.com>
 
 PORTNAME=	tg_owt
 PORTVERSION=	0.0.20211021
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	net-im
 
 MAINTAINER=	glebius@FreeBSD.org
 COMMENT=	Webrtc library used by telegram-desktop
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	v4l_compat>0:multimedia/v4l_compat \
 		yasm:devel/yasm
 LIB_DEPENDS=	libavformat.so:multimedia/ffmpeg \
 		libevent.so:devel/libevent \
 		libjpeg.so:graphics/jpeg-turbo \
 		libopus.so:audio/opus \
 		libpipewire-0.3.so:multimedia/pipewire \
 		libusrsctp.so:net/libusrsctp \
 		libvpx.so:multimedia/libvpx
 
 USES=		cmake pkgconfig xorg
 USE_XORG=	x11 xcomposite xdamage xrender xrandr xtst
 USE_GITHUB=	yes
 GH_ACCOUNT=	desktop-app
 GH_TAGNAME=	d578c76
 # libyuv cloned from https://chromium.googlesource.com/libyuv/libyuv
 GH_TUPLE=	webmproject:libvpx:5b63f0f:libvpx/src/third_party/libvpx/source/libvpx \
 		HenryHu:libyuv:ad89006:libyuv/src/third_party/libyuv
 
 CMAKE_OFF=	BUILD_SHARED_LIBS TG_OWT_BUILD_AUDIO_BACKENDS
 
 # Disable DCHECKs, otherwise video calls will crash.
 CXXFLAGS+=	-DNDEBUG
 
 .include <bsd.port.mk>
diff --git a/net-im/tg_owt/files/patch-src_third__party_abseil-cpp_absl_meta_type__traits.h b/net-im/tg_owt/files/patch-src_third__party_abseil-cpp_absl_meta_type__traits.h
new file mode 100644
index 000000000000..eeb40597b6c8
--- /dev/null
+++ b/net-im/tg_owt/files/patch-src_third__party_abseil-cpp_absl_meta_type__traits.h
@@ -0,0 +1,30 @@
+--- src/third_party/abseil-cpp/absl/meta/type_traits.h.orig	2021-10-21 06:15:41 UTC
++++ src/third_party/abseil-cpp/absl/meta/type_traits.h
+@@ -616,19 +616,14 @@ using common_type_t = typename std::common_type<T...>:
+ template <typename T>
+ using underlying_type_t = typename std::underlying_type<T>::type;
+ 
+-#if _MSVC_LANG > 201703L
+-template <typename T>
+-struct result_of_helper;
+-template <typename F, typename ...Args>
+-struct result_of_helper<F(Args...)> {
+-  using type = std::invoke_result_t<F, Args...>;
+-};
+-template <typename T>
+-using result_of_t = typename result_of_helper<T>::type;
+-#else   // C++20
+-template <typename T>
+-using result_of_t = typename std::result_of<T>::type;
+-#endif  // C++20
++#if __cplusplus >= 201703L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)
++// std::result_of is deprecated (C++17) or removed (C++20)
++template<typename> struct result_of;
++template<typename F, typename... Args>
++struct result_of<F(Args...)> : std::invoke_result<F, Args...> {};
++#else
++template<typename F> using result_of = std::result_of<F>;
++#endif
+ 
+ namespace type_traits_internal {
+ // In MSVC we can't probe std::hash or stdext::hash because it triggers a