microsoft · titaiwangms · Jan 12, 2026 · Nov 14, 2025 · Nov 15, 2025 · Nov 15, 2025
diff --git a/cmake/deps.txt b/cmake/deps.txt
@@ -34,7 +34,7 @@ microsoft_gsl;https://github.com/microsoft/GSL/archive/refs/tags/v4.0.0.zip;cf36
 microsoft_wil;https://github.com/microsoft/wil/archive/refs/tags/v1.0.250325.1.zip;826c8bd47c2258ec61b8b218e031e5b33d27f761
 mimalloc;https://github.com/microsoft/mimalloc/archive/refs/tags/v2.1.1.zip;d5ee7d34223d0567892db5179849939c8769dc41
 mp11;https://github.com/boostorg/mp11/archive/refs/tags/boost-1.82.0.zip;9bc9e01dffb64d9e0773b2e44d2f22c51aace063
-onnx;https://github.com/onnx/onnx/archive/refs/tags/v1.19.1.zip;c5215b5697dcdfd71799f001b8c4054a6bba6b09
+onnx;https://github.com/onnx/onnx/archive/refs/tags/v1.20.1.zip;30b80c81a1a381188896e86abe460c3c3f3091fd
 # Use the latest commit of 10.9-GA
 onnx_tensorrt;https://github.com/onnx/onnx-tensorrt/archive/d5dce67db7c2e64b07e055571f5ec06f7f254de2.zip;01114d3b67650857281fa50faa2e412130a63b69
 protobuf;https://github.com/protocolbuffers/protobuf/archive/refs/tags/v21.12.zip;7cf2733949036c7d52fda017badcab093fe73bfa

diff --git a/cmake/external/onnx b/cmake/external/onnx
diff --git a/cmake/onnxruntime_unittests.cmake b/cmake/onnxruntime_unittests.cmake
@@ -1128,7 +1128,7 @@ onnxruntime_add_static_library(onnx_test_data_proto ${TEST_SRC_DIR}/proto/tml.pr
 add_dependencies(onnx_test_data_proto onnx_proto ${onnxruntime_EXTERNAL_DEPENDENCIES})
 #onnx_proto target should mark this definition as public, instead of private
 target_compile_definitions(onnx_test_data_proto PRIVATE "-DONNX_API=")
-onnxruntime_add_include_to_target(onnx_test_data_proto onnx_proto)
+onnxruntime_add_include_to_target(onnx_test_data_proto onnx_proto ${PROTOBUF_LIB})
 if (MSVC)
     # Cutlass code has an issue with the following:
     # warning C4100: 'magic': unreferenced formal parameter

diff --git a/cmake/patches/onnx/onnx.patch b/cmake/patches/onnx/onnx.patch
@@ -1,26 +1,26 @@
 diff --git a/CMakeLists.txt b/CMakeLists.txt
-index cc3ef140..f70312ba 100644
+index 584c0419a..5d4ffff99 100644
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
-@@ -57,6 +57,7 @@ option(ONNX_USE_LITE_PROTO "Use lite protobuf instead of full." OFF)
+@@ -52,6 +52,7 @@ option(ONNX_USE_LITE_PROTO "Use lite protobuf instead of full." OFF)
  option(ONNX_DISABLE_EXCEPTIONS "Disable exception handling." OFF)
  option(ONNX_DISABLE_STATIC_REGISTRATION "Disable static registration for ONNX operator schemas." OFF)
  option(ONNX_USE_UNITY_BUILD "Enable Unity (Jumbo) build for" OFF)
 +option(ONNX_MINIMAL_BUILD "Build only essential ONNX components" OFF)
  if(WIN32)
    option(ONNX_USE_MSVC_STATIC_RUNTIME "Build with MSVC static runtime" OFF)
  endif()
-@@ -409,14 +410,28 @@ relative_protobuf_generate_cpp(ONNX_PROTO_SRCS
-
- add_library(onnx_proto ${ONNX_PROTO_SRCS})
+@@ -397,14 +398,28 @@ relative_protobuf_generate_cpp(ONNX_PROTO_SRCS
+                                onnx/onnx-operators.in.proto
+                                onnx/onnx-data.in.proto)
 
 -file(GLOB_RECURSE __tmp_srcs "${ONNX_ROOT}/onnx/*.h" "${ONNX_ROOT}/onnx/*.cc")
 -file(GLOB_RECURSE onnx_gtests_src "${ONNX_ROOT}/onnx/test/cpp/*.h"
 -    "${ONNX_ROOT}/onnx/test/cpp/*.cc"
 -    "${ONNX_ROOT}/onnx/backend/test/cpp/*.cc"
 -    "${ONNX_ROOT}/onnx/backend/test/cpp/*.h")
 -list(REMOVE_ITEM __tmp_srcs "${ONNX_ROOT}/onnx/cpp2py_export.cc")
--list(REMOVE_ITEM __tmp_srcs ${onnx_gtests_src})
+-list(REMOVE_ITEM __tmp_srcs ${onnx_gtests_src} "${ONNX_ROOT}/onnx/test/cmake/main.cc")
 -list(APPEND ONNX_SRCS ${__tmp_srcs})
 +if(ONNX_MINIMAL_BUILD)
 +    message(STATUS "Configuring ONNX minimal build")
@@ -41,54 +41,44 @@ index cc3ef140..f70312ba 100644
 +        "${ONNX_ROOT}/onnx/backend/test/cpp/*.cc"
 +        "${ONNX_ROOT}/onnx/backend/test/cpp/*.h")
 +    list(REMOVE_ITEM __tmp_srcs "${ONNX_ROOT}/onnx/cpp2py_export.cc")
-+    list(REMOVE_ITEM __tmp_srcs ${onnx_gtests_src})
++    list(REMOVE_ITEM __tmp_srcs ${onnx_gtests_src} "${ONNX_ROOT}/onnx/test/cmake/main.cc")
 +    list(APPEND ONNX_SRCS ${__tmp_srcs})
 +endif()
 
- # Hide all symbols we don't need
- set_target_properties(onnx_proto PROPERTIES CXX_VISIBILITY_PRESET hidden)
-@@ -438,19 +453,6 @@ add_onnx_global_defines(onnx_proto)
- target_include_directories(onnx_proto PUBLIC
-   $<BUILD_INTERFACE:${ONNX_ROOT}>
-   $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
--if(MSVC)
--  # For disabling Protobuf related warnings
--  target_compile_options(onnx_proto PUBLIC
--    /wd4146 # unary minus operator applied to unsigned type,
--            # result still unsigned
--    /wd4244 # 'argument': conversion from 'google::
--            # protobuf::uint64' to 'int', possible
--            # loss of data
--    /wd4267 # Conversion from 'size_t' to 'int',
--            # possible loss of data
--    /wd4141 # 'inline': used more than once
--  )
--endif()
+ set(LINKED_PROTOBUF_TARGET protobuf::libprotobuf)
+ if(ONNX_USE_LITE_PROTO)
+diff --git a/cmake/Utils.cmake b/cmake/Utils.cmake
+index 07f2b9071..388d9f7a3 100644
+--- a/cmake/Utils.cmake
++++ b/cmake/Utils.cmake
+@@ -31,18 +31,7 @@ endfunction()
 
- if(CMAKE_SYSTEM_NAME STREQUAL "AIX")
-   # whole-archive linker option not available on AIX.
+ function(add_onnx_compile_options target)
+   if(MSVC)
+-    # For disabling Protobuf related warnings
+-    set(protobuf_warnings
+-        /wd4146 # unary minus operator applied to unsigned type, result still
+-                # unsigned
+-        /wd4244 # 'argument': conversion from 'google::protobuf::uint64' to
+-                # 'int', possible loss of data
+-        /wd4267 # Conversion from 'size_t' to 'int', possible loss of data
+-        /wd4141 # 'inline': used more than once
+-        /wd4047 # '=': 'uintptr_t' differs in levels of indirection from 'void *'
+-    )
+     add_msvc_runtime_flag(${target})
+-    target_compile_options(${target} PUBLIC ${protobuf_warnings})
+     if(ONNX_WERROR)
+       target_compile_options(${target} PRIVATE "/WX")
+     endif()
 diff --git a/onnx/defs/nn/old.cc b/onnx/defs/nn/old.cc
-index ad6dd0c1..50259f32 100644
+index 887151217..ac2e8c463 100644
 --- a/onnx/defs/nn/old.cc
 +++ b/onnx/defs/nn/old.cc
-@@ -4091,7 +4091,6 @@ ONNX_OPERATOR_SET_SCHEMA(
+@@ -4152,7 +4152,6 @@ ONNX_OPERATOR_SET_SCHEMA(
      GroupNormalization,
      18,
      OpSchema()
 -        .Deprecate()
          .SetDoc(GroupNormalization_ver18_doc)
          .Attr("epsilon", "The epsilon value to use to avoid division by zero.", AttributeProto::FLOAT, 1e-5f)
          .Attr(
-diff --git a/onnx/defs/schema.h b/onnx/defs/schema.h
-index 7e9bc27f..4b87c5a5 100644
---- a/onnx/defs/schema.h
-+++ b/onnx/defs/schema.h
-@@ -999,7 +999,7 @@ class OpSchemaRegistry final : public ISchemaRegistry {
-   class OpSchemaRegisterOnce final {
-    public:
-     // Export to cpp custom register macro
--    explicit OpSchemaRegisterOnce(
-+    OpSchemaRegisterOnce(
-         OpSchema op_schema,
-         int opset_version_to_load = 0,
-         bool fail_duplicate_schema = true) {
diff --git a/cmake/vcpkg-ports/onnx/binskim.patch b/cmake/vcpkg-ports/onnx/binskim.patch
@@ -1,26 +1,26 @@
 diff --git a/CMakeLists.txt b/CMakeLists.txt
-index cc3ef140..f70312ba 100644
+index 584c0419a..5d4ffff99 100644
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
-@@ -57,6 +57,7 @@ option(ONNX_USE_LITE_PROTO "Use lite protobuf instead of full." OFF)
+@@ -52,6 +52,7 @@ option(ONNX_USE_LITE_PROTO "Use lite protobuf instead of full." OFF)
  option(ONNX_DISABLE_EXCEPTIONS "Disable exception handling." OFF)
  option(ONNX_DISABLE_STATIC_REGISTRATION "Disable static registration for ONNX operator schemas." OFF)
  option(ONNX_USE_UNITY_BUILD "Enable Unity (Jumbo) build for" OFF)
 +option(ONNX_MINIMAL_BUILD "Build only essential ONNX components" OFF)
  if(WIN32)
    option(ONNX_USE_MSVC_STATIC_RUNTIME "Build with MSVC static runtime" OFF)
  endif()
-@@ -409,14 +410,28 @@ relative_protobuf_generate_cpp(ONNX_PROTO_SRCS
-
- add_library(onnx_proto ${ONNX_PROTO_SRCS})
+@@ -397,14 +398,28 @@ relative_protobuf_generate_cpp(ONNX_PROTO_SRCS
+                                onnx/onnx-operators.in.proto
+                                onnx/onnx-data.in.proto)
 
 -file(GLOB_RECURSE __tmp_srcs "${ONNX_ROOT}/onnx/*.h" "${ONNX_ROOT}/onnx/*.cc")
 -file(GLOB_RECURSE onnx_gtests_src "${ONNX_ROOT}/onnx/test/cpp/*.h"
 -    "${ONNX_ROOT}/onnx/test/cpp/*.cc"
 -    "${ONNX_ROOT}/onnx/backend/test/cpp/*.cc"
 -    "${ONNX_ROOT}/onnx/backend/test/cpp/*.h")
 -list(REMOVE_ITEM __tmp_srcs "${ONNX_ROOT}/onnx/cpp2py_export.cc")
--list(REMOVE_ITEM __tmp_srcs ${onnx_gtests_src})
+-list(REMOVE_ITEM __tmp_srcs ${onnx_gtests_src} "${ONNX_ROOT}/onnx/test/cmake/main.cc")
 -list(APPEND ONNX_SRCS ${__tmp_srcs})
 +if(ONNX_MINIMAL_BUILD)
 +    message(STATUS "Configuring ONNX minimal build")
@@ -41,54 +41,44 @@ index cc3ef140..f70312ba 100644
 +        "${ONNX_ROOT}/onnx/backend/test/cpp/*.cc"
 +        "${ONNX_ROOT}/onnx/backend/test/cpp/*.h")
 +    list(REMOVE_ITEM __tmp_srcs "${ONNX_ROOT}/onnx/cpp2py_export.cc")
-+    list(REMOVE_ITEM __tmp_srcs ${onnx_gtests_src})
++    list(REMOVE_ITEM __tmp_srcs ${onnx_gtests_src} "${ONNX_ROOT}/onnx/test/cmake/main.cc")
 +    list(APPEND ONNX_SRCS ${__tmp_srcs})
 +endif()
 
- # Hide all symbols we don't need
- set_target_properties(onnx_proto PROPERTIES CXX_VISIBILITY_PRESET hidden)
-@@ -438,19 +453,6 @@ add_onnx_global_defines(onnx_proto)
- target_include_directories(onnx_proto PUBLIC
-   $<BUILD_INTERFACE:${ONNX_ROOT}>
-   $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
--if(MSVC)
--  # For disabling Protobuf related warnings
--  target_compile_options(onnx_proto PUBLIC
--    /wd4146 # unary minus operator applied to unsigned type,
--            # result still unsigned
--    /wd4244 # 'argument': conversion from 'google::
--            # protobuf::uint64' to 'int', possible
--            # loss of data
--    /wd4267 # Conversion from 'size_t' to 'int',
--            # possible loss of data
--    /wd4141 # 'inline': used more than once
--  )
--endif()
+ set(LINKED_PROTOBUF_TARGET protobuf::libprotobuf)
+ if(ONNX_USE_LITE_PROTO)
+diff --git a/cmake/Utils.cmake b/cmake/Utils.cmake
+index 07f2b9071..388d9f7a3 100644
+--- a/cmake/Utils.cmake
++++ b/cmake/Utils.cmake
+@@ -31,18 +31,7 @@ endfunction()
 
- if(CMAKE_SYSTEM_NAME STREQUAL "AIX")
-   # whole-archive linker option not available on AIX.
+ function(add_onnx_compile_options target)
+   if(MSVC)
+-    # For disabling Protobuf related warnings
+-    set(protobuf_warnings
+-        /wd4146 # unary minus operator applied to unsigned type, result still
+-                # unsigned
+-        /wd4244 # 'argument': conversion from 'google::protobuf::uint64' to
+-                # 'int', possible loss of data
+-        /wd4267 # Conversion from 'size_t' to 'int', possible loss of data
+-        /wd4141 # 'inline': used more than once
+-        /wd4047 # '=': 'uintptr_t' differs in levels of indirection from 'void *'
+-    )
+     add_msvc_runtime_flag(${target})
+-    target_compile_options(${target} PUBLIC ${protobuf_warnings})
+     if(ONNX_WERROR)
+       target_compile_options(${target} PRIVATE "/WX")
+     endif()
 diff --git a/onnx/defs/nn/old.cc b/onnx/defs/nn/old.cc
-index ad6dd0c1..50259f32 100644
+index 887151217..ac2e8c463 100644
 --- a/onnx/defs/nn/old.cc
 +++ b/onnx/defs/nn/old.cc
-@@ -4091,7 +4091,6 @@ ONNX_OPERATOR_SET_SCHEMA(
+@@ -4152,7 +4152,6 @@ ONNX_OPERATOR_SET_SCHEMA(
      GroupNormalization,
      18,
      OpSchema()
 -        .Deprecate()
          .SetDoc(GroupNormalization_ver18_doc)
          .Attr("epsilon", "The epsilon value to use to avoid division by zero.", AttributeProto::FLOAT, 1e-5f)
          .Attr(
-diff --git a/onnx/defs/schema.h b/onnx/defs/schema.h
-index 7e9bc27f..4b87c5a5 100644
---- a/onnx/defs/schema.h
-+++ b/onnx/defs/schema.h
-@@ -999,7 +999,7 @@ class OpSchemaRegistry final : public ISchemaRegistry {
-   class OpSchemaRegisterOnce final {
-    public:
-     // Export to cpp custom register macro
--    explicit OpSchemaRegisterOnce(
-+    OpSchemaRegisterOnce(
-         OpSchema op_schema,
-         int opset_version_to_load = 0,
-         bool fail_duplicate_schema = true) {
diff --git a/cmake/vcpkg-ports/onnx/fix-dependency-protobuf.patch b/cmake/vcpkg-ports/onnx/fix-dependency-protobuf.patch
@@ -1,8 +1,8 @@
 diff --git a/CMakeLists.txt b/CMakeLists.txt
-index 47995579..1542b11f 100644
+index 4a7df7d71..257d77e61 100644
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
-@@ -169,6 +169,7 @@ if(NOT DEFINED CMAKE_POSITION_INDEPENDENT_CODE)
+@@ -159,6 +159,7 @@ if(NOT DEFINED CMAKE_POSITION_INDEPENDENT_CODE)
    set(CMAKE_POSITION_INDEPENDENT_CODE ON)
  endif()
 
@@ -11,14 +11,14 @@ index 47995579..1542b11f 100644
  if(NOT ONNX_BUILD_CUSTOM_PROTOBUF)
    if((ONNX_USE_LITE_PROTO AND TARGET protobuf::libprotobuf-lite) OR ((NOT ONNX_USE_LITE_PROTO) AND TARGET protobuf::libprotobuf))
 diff --git a/cmake/ONNXConfig.cmake.in b/cmake/ONNXConfig.cmake.in
-index a5129bfd..d450b51e 100644
+index aa1ef47d9..d450b51e5 100644
 --- a/cmake/ONNXConfig.cmake.in
 +++ b/cmake/ONNXConfig.cmake.in
 @@ -4,9 +4,8 @@
  # library version information
  set(ONNX_VERSION "@ONNX_VERSION@")
 
--if((NOT @@ONNX_USE_PROTOBUF_SHARED_LIBS@@) AND @@Build_Protobuf@@)
+-if(NOT @ONNX_USE_PROTOBUF_SHARED_LIBS@)
 -  find_package(Protobuf REQUIRED CONFIG)
 -endif()
 +include(CMakeFindDependencyMacro)

diff --git a/cmake/vcpkg-ports/onnx/portfile.cmake b/cmake/vcpkg-ports/onnx/portfile.cmake
@@ -4,7 +4,7 @@ vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO onnx/onnx
     REF "v${VERSION}"
-    SHA512 cf6ff4c0bb6cc16ce5f4d6267480d35f3c7a5fde94d10e1358928ff6e4ec6d756a7c5d34a500e60bbd8eb1912c8af21aa763719321b330f56a0eb6b9b810ef60
+    SHA512 4bbc4c09e4bb3eb6049d653ce49200564e8c5dcf1154a30f894f24e15f1986d1f2fe2f4ca32fe383c559e2a0b20681f33d649376bf63e4345df6972a2c78eac8
     PATCHES
         fix-cmakelists.patch
         fix-dependency-protobuf.patch

diff --git a/cmake/vcpkg-ports/onnx/vcpkg.json b/cmake/vcpkg-ports/onnx/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "onnx",
-  "version-semver": "1.19.1",
+  "version-semver": "1.20.1",
   "port-version": 1,
   "description": "Open standard for machine learning interoperability",
   "homepage": "https://onnx.ai",

diff --git a/docs/How_To_Update_ONNX_Dev_Notes.md b/docs/How_To_Update_ONNX_Dev_Notes.md
@@ -34,6 +34,7 @@ git add onnx
 
 1. Modify [cmake/vcpkg-ports/onnx/binskim.patch](/cmake/vcpkg-ports/onnx/binskim.patch) to be the same as [cmake/patches/onnx/onnx.patch](/cmake/patches/onnx/onnx.patch).
 2. The other patches are required/created by vcpkg repository to build ONNX. We just need to re-run diff to makes sure the patches can be applied in the updated ONNX version.
+   a. VCPKG relies these patches to build ONNX.
 3. Update [cmake/vcpkg-ports/onnx/portfile.cmake](/cmake/vcpkg-ports/onnx/portfile.cmake) with the correct commit id and SHA512. (alternatively, build it with the wrong SHA and ORT should tell you the expected one.)
 4. Upload your package: [Follow the instructions](https://microsoft.sharepoint.com/:o:/r/teams/ONNX2/_layouts/15/Doc.aspx?sourcedoc=%7B170774BE-E1C6-4F8B-A3AE-984F211FE410%7D&wd=target(Development.one%7C63D3AB47-51D1-4A62-9965-66882234BD44%2FUpdate%20a%20VCPKG%20package%7CB6AE6A97-94FC-4436-8FC6-08C21AE895DA%2F)&wdpartid=%7BB5CF19CC-40FE-0EC7-32B6-8119B427B32A%7D%7B1%7D&wdsectionfileid=%7B9DD25660-A195-48EA-B9E0-DF8B902AFDD7%7D&ovuser=72f988bf-86f1-41af-91ab-2d7cd011db47%2Ctitaiwang%40microsoft.com&clickparams=eyJBcHBOYW1lIjoiVGVhbXMtRGVza3RvcCIsIkFwcFZlcnNpb24iOiI0OS8yNTA5MTExNjAxNiIsIkhhc0ZlZGVyYXRlZFVzZXIiOmZhbHNlfQ%3D%3D&CID=fb9dcaa1-c0b5-1000-5597-c19e3adf468c&cidOR=SPO)one%7C63d3ab47-51d1-4a62-9965-66882234bd44%2FAdd%20or%20Update%20a%20C%2B%2B%20dependency%7Cb6ae6a97-94fc-4436-8fc6-08c21ae895da%2F%29&wdorigin=NavigationUrl