diff --git a/rtc_base/swap_queue_unittest.cc b/rtc_base/swap_queue_unittest.cc
index 28f870b..199ac6b 100644
--- a/rtc_base/swap_queue_unittest.cc
+++ b/rtc_base/swap_queue_unittest.cc
@@ -10,6 +10,7 @@
 
 #include "rtc_base/swap_queue.h"
 
+#include <cstdint>
 #include <vector>
 
 #include "test/gtest.h"