--- opencv-4.5.1/modules/gapi/test/gapi_async_test.cpp~	2020-12-21 21:01:38.000000000 +0100
+++ opencv-4.5.1/modules/gapi/test/gapi_async_test.cpp	2021-11-25 09:37:36.975911938 +0100
@@ -13,6 +13,7 @@
 
 #include <condition_variable>
 #include <stdexcept>
+#include <thread>
 
 namespace opencv_test
 {