--- src/htsrandom.c.orig	2026-08-08 16:13:49.000000000 -0400
+++ src/htsrandom.c	2026-08-09 20:28:18.000000000 -0400
@@ -40,6 +40,7 @@
 #else
 #include <errno.h>
 #include <stdio.h>
+#include <sys/types.h>
 #ifdef HAVE_SYS_RANDOM_H
 #include <sys/random.h>
 #endif