diff --git a/src/io.c b/src/io.c
index fa8a04880b77bf500d09105dc56cf27fcb1fd185..da26a57de4bc15783b47a1ae6cf1e793a7bad814 100644
--- a/src/io.c
+++ b/src/io.c
@@ -16,6 +16,7 @@
 #include <unistd.h>
 #include <malloc.h>
 #include <dirent.h>
+#include <stdint.h>
 #include <sys/mman.h>
 #include <sys/wait.h>
 #include <sys/stat.h>