diff --git a/cmake/winml.cmake b/cmake/winml.cmake
index 934caedaba..75111caaea 100644
--- a/cmake/winml.cmake
+++ b/cmake/winml.cmake
@@ -406,6 +406,7 @@ target_include_directories(winml_lib_api PRIVATE ${REPO_ROOT}/cmake/external/eig
 target_include_directories(winml_lib_api PRIVATE ${REPO_ROOT}/cmake/external/onnx)
 target_include_directories(winml_lib_api PRIVATE ${REPO_ROOT}/cmake/external/protobuf/src)
 target_include_directories(winml_lib_api PRIVATE ${REPO_ROOT}/cmake/external/gsl/include)
+target_include_directories(winml_lib_api PRIVATE ${REPO_ROOT}/cmake/external/SafeInt)
 
 # Properties
 set_target_properties(winml_lib_api
@@ -541,6 +542,7 @@ target_include_directories(winml_dll PRIVATE ${REPO_ROOT}/cmake/external/onnx)
 target_include_directories(winml_dll PRIVATE ${REPO_ROOT}/cmake/external/protobuf/src)
 target_include_directories(winml_dll PRIVATE ${REPO_ROOT}/cmake/external/gsl/include)
 target_include_directories(winml_dll PRIVATE ${REPO_ROOT}/cmake/external/eigen)
+target_include_directories(winml_dll PRIVATE ${REPO_ROOT}/cmake/external/SafeInt)
 
 # Properties
 set_target_properties(winml_dll
diff --git a/cmake/winml_unittests.cmake b/cmake/winml_unittests.cmake
index 73d0ff7fde..2e9814da0a 100644
--- a/cmake/winml_unittests.cmake
+++ b/cmake/winml_unittests.cmake
@@ -10,6 +10,7 @@ set(WINML_TEST_INC_DIR
   ${REPO_ROOT}/cmake/external/googletest/googletest/include
   ${REPO_ROOT}/cmake/external/protobuf/src
   ${REPO_ROOT}/cmake/external/wil/include
+  ${REPO_ROOT}/cmake/external/SafeInt
   ${CMAKE_CURRENT_BINARY_DIR}
   ${CMAKE_CURRENT_BINARY_DIR}/winml_api
   ${CMAKE_CURRENT_BINARY_DIR}/winml_api/comp_generated