diff --git a/misc/ecflow/Makefile b/misc/ecflow/Makefile
index ad7b9dff72e0..7cc9d7556043 100644
--- a/misc/ecflow/Makefile
+++ b/misc/ecflow/Makefile
@@ -1,40 +1,41 @@
 PORTNAME=	ecflow
-DISTVERSION=	5.11.3
+DISTVERSION=	5.12.3
 CATEGORIES=	misc
 MASTER_SITES=	https://confluence.ecmwf.int/download/attachments/8650755/
 DISTNAME=	ecFlow-${DISTVERSION}-Source
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Workflow package that enables users to run a large number of programs
 WWW=		https://confluence.ecmwf.int/display/ECFLOW/ecflow+home
 
 LICENSE=	APACHE20
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 PY_DEPENDS=	${PYTHON_PKGNAMEPREFIX}boost-libs>0:devel/boost-python-libs@${PY_FLAVOR}
 BUILD_DEPENDS=	bash:shells/bash \
 		${PY_DEPENDS}
 LIB_DEPENDS=	libboost_program_options.so:devel/boost-libs
 RUN_DEPENDS=	${PY_DEPENDS}
 
-USES=		cmake compiler:c++17-lang localbase perl5 pkgconfig python qt:5 shebangfix ssl
-USE_QT=		charts core gui network svg widgets buildtools:build qmake:build
+USES=		cmake compiler:c++17-lang gl localbase perl5 pkgconfig python qt:6 shebangfix ssl
+USE_QT=		5compat base charts svg tools:build
+USE_GL=		gl opengl
 
 SHEBANG_GLOB=	*.sh *.in *.py
 
 CMAKE_OFF=	ENABLE_STATIC_BOOST_LIBS ENABLE_TESTS ENABLE_ALL_TESTS
 
 CXXFLAGS_armv7=	-fPIC # attempt to work around compilation failure, see https://jira.ecmwf.int/browse/SUP-3688
 CXXFLAGS_i386=	-fPIC # attempt to work around compilation failure, see https://jira.ecmwf.int/browse/SUP-3688
 
 CONFLICTS_BUILD=	python27 # build attempts to find python-2.7 and use it
 
 .include <bsd.port.pre.mk>
 
-post-patch:
-.if ${COMPILER_TYPE} == clang && ${COMPILER_VERSION} >= 160
-	@${REINPLACE_CMD} -e 's|std::binary_function|std::__binary_function|' \
-		${WRKSRC}/ACore/src/Str.cpp
-.endif
+#post-patch:
+#.if ${COMPILER_TYPE} == clang && ${COMPILER_VERSION} >= 160
+#	@${REINPLACE_CMD} -e 's|std::binary_function|std::__binary_function|' \
+#		${WRKSRC}/ACore/src/Str.cpp
+#.endif
 
 .include <bsd.port.post.mk>
diff --git a/misc/ecflow/distinfo b/misc/ecflow/distinfo
index f038007591e4..0a83af35e3d1 100644
--- a/misc/ecflow/distinfo
+++ b/misc/ecflow/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1691030657
-SHA256 (ecFlow-5.11.3-Source.tar.gz) = 66f4959e88b94dfecb7901a9370916bb57fa8b2cdaa2889099a907a706b655ec
-SIZE (ecFlow-5.11.3-Source.tar.gz) = 16713592
+TIMESTAMP = 1710484427
+SHA256 (ecFlow-5.12.3-Source.tar.gz) = 2caaf64bf1e0ced87fd0bf42c2ee3385093420e5c4609ad4117b8251420d1cf0
+SIZE (ecFlow-5.12.3-Source.tar.gz) = 16863495