diff --git a/include/flatbuffers/util.h b/include/flatbuffers/util.h
index 9f9cb9d64..30037963b 100644
--- a/include/flatbuffers/util.h
+++ b/include/flatbuffers/util.h
@@ -21,6 +21,7 @@
 #include <iomanip>
 #include <string>
 #include <sstream>
+#include <stdint.h>
 #include <stdlib.h>
 #include <assert.h>
 #ifdef _WIN32