diff --git a/test/tempfile.h b/test/tempfile.h
index 75feb6c..6441e9a 100644
--- a/test/tempfile.h
+++ b/test/tempfile.h
@@ -21,6 +21,7 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <cstdint>
 #include <vector>
 
 class tempfile {