diff --git a/src/bk_download.h b/src/bk_download.h
index bcd77431..67faab23 100644
--- a/src/bk_download.h
+++ b/src/bk_download.h
@@ -16,6 +16,7 @@
 #pragma once
 #include <list>
 #include <string>
+#include <cstdint>
 #include <photon/fs/filesystem.h>
 
 class ImageFile;