diff --git a/misc/py-onnx/Makefile b/misc/py-onnx/Makefile
index ef62aca59178..2ca2a40f231a 100644
--- a/misc/py-onnx/Makefile
+++ b/misc/py-onnx/Makefile
@@ -1,36 +1,36 @@
 PORTNAME=	onnx
 DISTVERSION=	1.14.1
 CATEGORIES=	misc # machine-learning
 MASTER_SITES=	PYPI
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Open Neural Network eXchange
 WWW=		https://onnx.ai/
 
 LICENSE=	MIT
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	bash:shells/bash \
 		cmake:devel/cmake-core \
 		protoc-gen-mypy:devel/py-mypy-protobuf@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pybind11>0:devel/py-pybind11@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}pytest-runner>=0:devel/py-pytest-runner@${PY_FLAVOR}
 LIB_DEPENDS=	libprotobuf.so:devel/protobuf
 RUN_DEPENDS=	${PYNUMPY} \
 		${PYTHON_PKGNAMEPREFIX}six>0:devel/py-six@${PY_FLAVOR} \
 		${PYTHON_PKGNAMEPREFIX}typing-extensions>=3.6.2.1:devel/py-typing-extensions@${PY_FLAVOR}
 
-USES=		compiler:c11 python shebangfix
+USES=		compiler:c++17-lang python shebangfix
 USE_PYTHON=	distutils concurrent autoplist
 
 CXXFLAGS+=	-Dstat64=stat
 
 SHEBANG_FILES=	tools/protoc-gen-mypy.sh.in
 
 BINARY_ALIAS=	python=${PYTHON_CMD}
 
 post-install:
 	@${STRIP_CMD} ${STAGEDIR}${PYTHONPREFIX_SITELIBDIR}/onnx/onnx_cpp2py_export*.so
 
 .include <bsd.port.mk>
diff --git a/misc/py-onnx/files/patch-CMakeLists.txt b/misc/py-onnx/files/patch-CMakeLists.txt
index 57ed278e4e2f..07e389904c09 100644
--- a/misc/py-onnx/files/patch-CMakeLists.txt
+++ b/misc/py-onnx/files/patch-CMakeLists.txt
@@ -1,11 +1,20 @@
---- CMakeLists.txt.orig	2023-04-12 23:29:41 UTC
+--- CMakeLists.txt.orig	2023-08-08 18:33:06 UTC
 +++ CMakeLists.txt
 @@ -18,7 +18,7 @@ project(onnx C CXX)
  option(ONNX_BUILD_BENCHMARKS "Build ONNX micro-benchmarks" OFF)
  option(ONNX_USE_PROTOBUF_SHARED_LIBS "Build ONNX using protobuf shared library. Sets PROTOBUF_USE_DLLS CMAKE Flag and Protobuf_USE_STATIC_LIBS. " OFF)
  
 -option(BUILD_ONNX_PYTHON "Build Python binaries" OFF)
 +option(BUILD_ONNX_PYTHON "Build Python binaries" ON)
  option(ONNX_GEN_PB_TYPE_STUBS "Generate protobuf python type stubs" ON)
  option(ONNX_WERROR "Build with Werror" OFF)
  option(ONNX_COVERAGE "Build with coverage instrumentation" OFF)
+@@ -58,7 +58,7 @@ endif()
+ # Required to use /std:c++17 or higher on Windows
+ # For other platforms, set C++11 as standard for the whole project
+ if(NOT MSVC)
+-  set(CMAKE_CXX_STANDARD 11)
++  set(CMAKE_CXX_STANDARD 17)
+ else()
+   string(APPEND CMAKE_CXX_FLAGS " /std:c++17")
+ endif()