diff --git a/ports/onnx/portfile.cmake b/ports/onnx/portfile.cmake
index 305ff3f5..2ceb9ad7 100644
--- a/ports/onnx/portfile.cmake
+++ b/ports/onnx/portfile.cmake
@@ -7,6 +7,7 @@ vcpkg_from_github(
     SHA512 b46a4ab70af88053318eba45251c1f71528f15e45a33042877570e8d857febd3ec66e2e811fcda2105a4f17b84c9a1c6a0aaa22756c3287321b3ea29e83127fd
     PATCHES
         fix-cmakelists.patch
+        support-test.patch
 )
 
 string(COMPARE EQUAL "${VCPKG_CRT_LINKAGE}" "static" USE_STATIC_RUNTIME)
@@ -27,10 +28,12 @@ message(STATUS "Using protoc: ${PROTOC}")
 
 vcpkg_check_features(OUT_FEATURE_OPTIONS FEATURE_OPTIONS
     FEATURES
-        python BUILD_ONNX_PYTHON
-        protobuf-lite ONNX_USE_LITE_PROTO
-        disable-exception ONNX_DISABLE_EXCEPTIONS
-        disable-static-generation ONNX_DISABLE_STATIC_REGISTRATION
+        python              BUILD_ONNX_PYTHON
+        protobuf-lite       ONNX_USE_LITE_PROTO
+        test                ONNX_BUILD_TESTS
+    INVERTED_FEATURES
+        exception           ONNX_DISABLE_EXCEPTIONS
+        static-registration ONNX_DISABLE_STATIC_REGISTRATION
 )
 
 if("python" IN_LIST FEATURES)
@@ -69,7 +72,6 @@ vcpkg_cmake_configure(
         -DONNX_GEN_PB_TYPE_STUBS=ON
         -DONNX_USE_PROTOBUF_SHARED_LIBS=${USE_PROTOBUF_SHARED}
         -DONNX_USE_MSVC_STATIC_RUNTIME=${USE_STATIC_RUNTIME}
-        -DONNX_BUILD_TESTS=OFF
         -DONNX_BUILD_BENCHMARKS=OFF
     MAYBE_UNUSED_VARIABLES
         ONNX_USE_MSVC_STATIC_RUNTIME
@@ -78,6 +80,9 @@ vcpkg_cmake_configure(
 
 vcpkg_cmake_install()
 vcpkg_cmake_config_fixup(CONFIG_PATH lib/cmake/ONNX PACKAGE_NAME ONNX)
+if("test" IN_LIST FEATURES)
+    vcpkg_copy_tools(TOOL_NAMES onnx_gtests AUTO_CLEAN)
+endif()
 
 file(REMOVE_RECURSE
     "${CURRENT_PACKAGES_DIR}/debug/include"
diff --git a/ports/onnx/support-test.patch b/ports/onnx/support-test.patch
new file mode 100644
index 00000000..132b3b44
--- /dev/null
+++ b/ports/onnx/support-test.patch
@@ -0,0 +1,54 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index dd9fba2..651cb4e 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -125,8 +125,7 @@ if(NOT DEFINED CMAKE_POSITION_INDEPENDENT_CODE)
+ endif()
+ 
+ if(ONNX_BUILD_TESTS)
+-  list(APPEND CMAKE_MODULE_PATH ${ONNX_ROOT}/cmake/external)
+-  include(googletest)
++  find_package(GTest CONFIG REQUIRED)
+ endif()
+ 
+ if((ONNX_USE_LITE_PROTO AND TARGET protobuf::libprotobuf-lite) OR ((NOT ONNX_USE_LITE_PROTO) AND TARGET protobuf::libprotobuf))
+diff --git a/cmake/unittest.cmake b/cmake/unittest.cmake
+index e71b92a..afccacf 100644
+--- a/cmake/unittest.cmake
++++ b/cmake/unittest.cmake
+@@ -22,7 +22,7 @@ function(AddTest)
+   list(REMOVE_DUPLICATES _UT_SOURCES)
+ 
+   add_executable(${_UT_TARGET} ${_UT_SOURCES})
+-  add_dependencies(${_UT_TARGET} onnx onnx_proto googletest)
++  add_dependencies(${_UT_TARGET} onnx onnx_proto)
+ 
+   target_include_directories(${_UT_TARGET}
+                              PUBLIC ${googletest_INCLUDE_DIRS}
+@@ -30,7 +30,7 @@ function(AddTest)
+                                     ${PROTOBUF_INCLUDE_DIRS}
+                                     ${ONNX_ROOT}
+                                     ${CMAKE_CURRENT_BINARY_DIR})
+-  target_link_libraries(${_UT_TARGET} ${_UT_LIBS} ${CMAKE_THREAD_LIBS_INIT})
++  target_link_libraries(${_UT_TARGET} ${_UT_LIBS} ${CMAKE_THREAD_LIBS_INIT} GTest::gtest)
+   if(TARGET protobuf::libprotobuf)
+     target_link_libraries(${_UT_TARGET} protobuf::libprotobuf)
+   else()
+@@ -84,3 +84,4 @@ function(AddTest)
+ endfunction(AddTest)
+ 
+ addtest(TARGET ${UT_NAME} SOURCES ${${UT_NAME}_src} LIBS ${${UT_NAME}_libs})
++install(TARGETS ${UT_NAME} DESTINATION ${CMAKE_INSTALL_BINDIR})
+diff --git a/onnx/test/cpp/test_main.cc b/onnx/test/cpp/test_main.cc
+index cee5e79..d77d2f2 100644
+--- a/onnx/test/cpp/test_main.cc
++++ b/onnx/test/cpp/test_main.cc
+@@ -8,7 +8,7 @@
+ 
+ #include "gtest/gtest.h"
+ 
+-GTEST_API_ int main(int argc, char** argv) {
++int main(int argc, char** argv) {
+   std::cout << "Running main() from test_main.cc" << std::endl;
+   ::testing::InitGoogleTest(&argc, argv);
+   return RUN_ALL_TESTS();
diff --git a/ports/onnx/vcpkg.json b/ports/onnx/vcpkg.json
index 450ce52d..44aaf3a3 100644
--- a/ports/onnx/vcpkg.json
+++ b/ports/onnx/vcpkg.json
@@ -1,6 +1,7 @@
 {
   "name": "onnx",
   "version-semver": "1.15.0",
+  "port-version": 1,
   "description": "Open standard for machine learning interoperability",
   "homepage": "https://onnx.ai",
   "license": "Apache-2.0",
@@ -19,12 +20,12 @@
       "host": true
     }
   ],
+  "default-features": [
+    "exception"
+  ],
   "features": {
-    "disable-exception": {
-      "description": "Disable exception handling"
-    },
-    "disable-static-generation": {
-      "description": "Disable static registration for onnx operator schemas"
+    "exception": {
+      "description": "Enable exception handling"
     },
     "python": {
       "description": "Build Python binaries",
@@ -35,6 +36,15 @@
           "host": true
         }
       ]
+    },
+    "static-registration": {
+      "description": "Enable static registration for onnx operator schemas"
+    },
+    "test": {
+      "description": "Enable exception handling",
+      "dependencies": [
+        "gtest"
+      ]
     }
   }
 }
diff --git a/test/self-hosted-cuda.json b/test/self-hosted-cuda.json
index e4943a73..9eb9fc46 100644
--- a/test/self-hosted-cuda.json
+++ b/test/self-hosted-cuda.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://raw.githubusercontent.com/microsoft/vcpkg-tool/main/docs/vcpkg.schema.json",
   "name": "test",
-  "version-date": "2024-05-13",
+  "version-date": "2024-05-25",
   "description": "vcpkg registry maintained by @luncliff",
   "homepage": "https://github.com/luncliff/vcpkg-registry",
   "supports": "windows",
@@ -13,19 +13,26 @@
       ],
       "platform": "x64 & windows"
     },
-    {
-      "name": "onnxruntime",
-      "features": [
-        "cuda"
-      ],
-      "platform": "x64 & windows"
-    },
     "nvidia-cnmem",
     "nvidia-cutlass",
     "nvidia-nvbench",
     "nvidia-tools-extension-sdk",
+    "nvidia-triton-client",
     "nvidia-triton-common",
     "nvidia-triton-core",
-    "nvidia-triton-client"
+    {
+      "name": "onnx",
+      "features": [
+        "static-registration",
+        "test"
+      ]
+    },
+    {
+      "name": "onnxruntime",
+      "features": [
+        "cuda"
+      ],
+      "platform": "x64 & windows"
+    }
   ]
-}
\ No newline at end of file
+}
diff --git a/test/self-hosted.json b/test/self-hosted.json
index 76f43b22..d4c5c633 100644
--- a/test/self-hosted.json
+++ b/test/self-hosted.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://raw.githubusercontent.com/microsoft/vcpkg-tool/main/docs/vcpkg.schema.json",
   "name": "test",
-  "version-date": "2024-05-18",
+  "version-date": "2024-05-25",
   "description": "vcpkg registry maintained by @luncliff",
   "homepage": "https://github.com/luncliff/vcpkg-registry",
   "supports": "windows",
@@ -14,6 +14,13 @@
       "platform": "x64 & windows"
     },
     "liblzma",
+    {
+      "name": "onnx",
+      "features": [
+        "static-registration",
+        "test"
+      ]
+    },
     {
       "name": "onnxruntime",
       "features": [
diff --git a/test/vcpkg.json b/test/vcpkg.json
index 6b100c85..30c0cd4b 100644
--- a/test/vcpkg.json
+++ b/test/vcpkg.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://raw.githubusercontent.com/microsoft/vcpkg-tool/main/docs/vcpkg.schema.json",
   "name": "test",
-  "version-date": "2024-05-18",
+  "version-date": "2024-05-25",
   "description": "vcpkg registry maintained by @luncliff",
   "homepage": "https://github.com/luncliff/vcpkg-registry",
   "supports": "windows | linux | osx | ios",
@@ -54,6 +54,13 @@
       "platform": "osx | ios"
     },
     "miniaudio",
+    {
+      "name": "onnx",
+      "features": [
+        "static-registration",
+        "test"
+      ]
+    },
     {
       "name": "onnxruntime",
       "features": [
diff --git a/versions/baseline.json b/versions/baseline.json
index 38bd882c..25f4756c 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -130,7 +130,7 @@
     },
     "onnx": {
       "baseline": "1.15.0",
-      "port-version": 0
+      "port-version": 1
     },
     "onnxruntime": {
       "baseline": "1.17.3",
diff --git a/versions/o-/onnx.json b/versions/o-/onnx.json
index a8ab9128..0ea46893 100644
--- a/versions/o-/onnx.json
+++ b/versions/o-/onnx.json
@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "fd1d8cd2b64f75ba7c9d34f1d4364ba3d038ac73",
+      "version-semver": "1.15.0",
+      "port-version": 1
+    },
     {
       "git-tree": "18fa90d742ae729066d99e418a07a4a8f00e34be",
       "version-semver": "1.15.0",