diff --git a/kraken/public/kraken.h b/kraken/public/kraken.h
index ab3b106..ed9f7b8 100644
--- a/kraken/public/kraken.h
+++ b/kraken/public/kraken.h
@@ -32,6 +32,7 @@
 
 #include "context.h"
 #include "hydra.h"
+#include <stdint.h>
 
 #define KR_NULL_HANDLE 0