1 files changed, 1 insertions, 0 deletions

diff --git a/src/io.c b/src/io.c
index 7d0b875..897f1a3 100644
--- a/src/io.c
+++ b/src/io.c
@@ -1,5 +1,6 @@
 #include "io.h"
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include "common.h"
 #include "json.h"