Index: head/www/uwebsockets/Makefile
===================================================================
--- head/www/uwebsockets/Makefile	(revision 568127)
+++ head/www/uwebsockets/Makefile	(revision 568128)
@@ -1,24 +1,30 @@
 # $FreeBSD$
 
 PORTNAME=	uwebsockets
 DISTVERSIONPREFIX=	v
-DISTVERSION=	18.23.0
+DISTVERSION=	19.0.0a5
 CATEGORIES=	www devel
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	C++ Web I/O library for the most demanding of applications
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-RUN_DEPENDS=	usockets>0:net/usockets
+# libdeflate is optionally needed
+RUN_DEPENDS=	libdeflate>0:archivers/libdeflate \
+		usockets>0:net/usockets
 
 USES=		gmake
+
 USE_GITHUB=	yes
 GH_ACCOUNT=	uNetworking
 GH_PROJECT=	uWebSockets
 
 NO_BUILD=	yes
 NO_ARCH=	yes
+
+post-install: # https://github.com/uNetworking/uWebSockets/issues/1221
+	${RMDIR} ${STAGEDIR}${PREFIX}/include/uWebSockets/f2
 
 .include <bsd.port.mk>
Index: head/www/uwebsockets/distinfo
===================================================================
--- head/www/uwebsockets/distinfo	(revision 568127)
+++ head/www/uwebsockets/distinfo	(revision 568128)
@@ -1,3 +1,3 @@
-TIMESTAMP = 1611827692
-SHA256 (uNetworking-uWebSockets-v18.23.0_GH0.tar.gz) = 2005ce1a4fd4ab5d151da91ba1a462f91313abfcc20810f7b1be8d7367b031b2
-SIZE (uNetworking-uWebSockets-v18.23.0_GH0.tar.gz) = 280174
+TIMESTAMP = 1615491019
+SHA256 (uNetworking-uWebSockets-v19.0.0a5_GH0.tar.gz) = 6f2c7cb32e774123cb70f2842d9f77e4cbc41e6648d2f0c177d7cca09bc98966
+SIZE (uNetworking-uWebSockets-v19.0.0a5_GH0.tar.gz) = 294963
Index: head/www/uwebsockets/pkg-plist
===================================================================
--- head/www/uwebsockets/pkg-plist	(revision 568127)
+++ head/www/uwebsockets/pkg-plist	(revision 568128)
@@ -1,28 +1,27 @@
 include/uWebSockets/App.h
 include/uWebSockets/AsyncSocket.h
 include/uWebSockets/AsyncSocketData.h
 include/uWebSockets/BloomFilter.h
 include/uWebSockets/HttpContext.h
 include/uWebSockets/HttpContextData.h
 include/uWebSockets/HttpParser.h
 include/uWebSockets/HttpResponse.h
 include/uWebSockets/HttpResponseData.h
 include/uWebSockets/HttpRouter.h
 include/uWebSockets/Loop.h
 include/uWebSockets/LoopData.h
 include/uWebSockets/MessageParser.h
+include/uWebSockets/MoveOnlyFunction.h
 include/uWebSockets/Multipart.h
 include/uWebSockets/PerMessageDeflate.h
 include/uWebSockets/ProxyParser.h
 include/uWebSockets/QueryParser.h
 include/uWebSockets/TopicTree.h
 include/uWebSockets/Utilities.h
 include/uWebSockets/WebSocket.h
 include/uWebSockets/WebSocketContext.h
 include/uWebSockets/WebSocketContextData.h
 include/uWebSockets/WebSocketData.h
 include/uWebSockets/WebSocketExtensions.h
 include/uWebSockets/WebSocketHandshake.h
 include/uWebSockets/WebSocketProtocol.h
-include/uWebSockets/f2/LICENSE.txt
-include/uWebSockets/f2/function2.hpp