diff --git a/src/frontend/helpers/progressive_job.h b/src/frontend/helpers/progressive_job.h
index da5602a..2787617 100644
--- a/src/frontend/helpers/progressive_job.h
+++ b/src/frontend/helpers/progressive_job.h
@@ -4,6 +4,7 @@
 
 #pragma once
 
+#include <functional>
 #include <QThread>
 #include "common/common_types.h"