diff --git a/test/tempfile.h b/test/tempfile.h
index f83e306..9505734 100644
--- a/test/tempfile.h
+++ b/test/tempfile.h
@@ -20,6 +20,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <cstdint>
 #include <vector>
 
 class tempfile {