diff --git a/cmake/Dependencies.cmake b/cmake/Dependencies.cmake
index c7f3ec76e621..cf15ddf38904 100644
--- a/cmake/Dependencies.cmake
+++ b/cmake/Dependencies.cmake
@@ -1321,6 +1321,7 @@ if(CAFFE2_CMAKE_BUILDING_WITH_MAIN_REPO AND NOT INTERN_DISABLE_ONNX)
     add_definitions(-DONNX_ML=1)
   endif()
   add_definitions(-DONNXIFI_ENABLE_EXT=1)
+  set(Python3_EXECUTABLE "${Python_EXECUTABLE}")
   if(NOT USE_SYSTEM_ONNX)
     add_subdirectory(${CMAKE_CURRENT_LIST_DIR}/../third_party/onnx EXCLUDE_FROM_ALL)
   endif()
diff --git a/third_party/onnx b/third_party/onnx
index b8baa8446686..e709452ef2bb 160000
--- a/third_party/onnx
+++ b/third_party/onnx
@@ -1 +1 @@
-Subproject commit b8baa8446686496da4cc8fda09f2b6fe65c2a02c
+Subproject commit e709452ef2bbc1d113faf678c24e6d3467696e83