diff --git a/driver/usb/usb_device_interface.h b/driver/usb/usb_device_interface.h
index 238bca9..54f2f6e 100644
--- a/driver/usb/usb_device_interface.h
+++ b/driver/usb/usb_device_interface.h
@@ -15,6 +15,8 @@
 #ifndef DARWINN_DRIVER_USB_USB_DEVICE_INTERFACE_H_
 #define DARWINN_DRIVER_USB_USB_DEVICE_INTERFACE_H_
 
+#include <cstdint>
+
 #include "port/array_slice.h"
 #include "port/integral_types.h"
 #include "port/status.h"