diff --git a/test/concur/test_concur_queue.cpp b/test/concur/test_concur_queue.cpp
index d01261a..458dfa6 100644
--- a/test/concur/test_concur_queue.cpp
+++ b/test/concur/test_concur_queue.cpp
@@ -3,6 +3,7 @@
 #include <cstddef>
 #include <atomic>
 #include <array>
+#include <thread>
 
 #include "gtest/gtest.h"