diff --git a/libuuu/libcomm.h b/libuuu/libcomm.h
index 93ab7e5..bc39be6 100644
--- a/libuuu/libcomm.h
+++ b/libuuu/libcomm.h
@@ -29,6 +29,7 @@
 *
 */
 #include <string>
+#include <cstdint>
 #include <stdarg.h>
 #include <locale>
 #include <cctype>
diff --git a/uuu/buildincmd.h b/uuu/buildincmd.h
index 9415117..3a94679 100644
--- a/uuu/buildincmd.h
+++ b/uuu/buildincmd.h
@@ -31,6 +31,7 @@
 
 #pragma once
 
+#include <cstdint>
 #include <map>
 #include <string>
 #include <vector>