diff --git a/wpiutil/src/test/native/cpp/rotated_span_test.cpp b/wpiutil/src/test/native/cpp/rotated_span_test.cpp
index b0ebbb8110d..e2596bad6e9 100644
--- a/wpiutil/src/test/native/cpp/rotated_span_test.cpp
+++ b/wpiutil/src/test/native/cpp/rotated_span_test.cpp
@@ -5,6 +5,7 @@
 #include "wpi/rotated_span.h"  // NOLINT(build/include_order)
 
 #include <array>
+#include <vector>
 
 #include <gtest/gtest.h>