diff --git a/onnxruntime/test/shared_lib/test_inference.cc b/onnxruntime/test/shared_lib/test_inference.cc
index d36d1d353d..d6a5c7e2c2 100644
--- a/onnxruntime/test/shared_lib/test_inference.cc
+++ b/onnxruntime/test/shared_lib/test_inference.cc
@@ -12,6 +12,7 @@
 #include <fstream>
 #include <sstream>
 #include <atomic>
+#include <mutex>
 #include <gtest/gtest.h>
 #include "test_allocator.h"
 #include "test_fixture.h"
@@ -915,4 +916,4 @@ TEST(CApiTest, TestSharedAllocatorUsingCreateAndRegisterAllocator) {
                     expected_dims_y,
                     expected_values_y,
                     nullptr);
-}
\ No newline at end of file
+}