diff --git a/tools/common.h b/tools/common.h
index 861d6f0e..d8f2ee6d 100644
--- a/tools/common.h
+++ b/tools/common.h
@@ -5,6 +5,7 @@
 
 #include <iostream>
 #include <string>
+#include <cstdint>
 
 
 #if defined(WIN32) || defined(_WIN32)