diff --git a/libs/sha1/sha1.h b/libs/sha1/sha1.h
index f6a03e73..9f526376 100644
--- a/libs/sha1/sha1.h
+++ b/libs/sha1/sha1.h
@@ -23,6 +23,7 @@
 
 #include <iostream>
 #include <string>
+#include <stdint.h>
 
 class SHA1
 {