diff --git a/include/Base64.h b/include/Base64.h
index e5b4930..548b9f1 100644
--- a/include/Base64.h
+++ b/include/Base64.h
@@ -26,6 +26,7 @@
  */
 
 #include <string>
+#include <stdint.h>
 
 namespace macaron {
 
diff --git a/include/libgourou.h b/include/libgourou.h
index 706504a..7093f8d 100644
--- a/include/libgourou.h
+++ b/include/libgourou.h
@@ -27,6 +27,7 @@
 #include "drmprocessorclient.h"
 
 #include <pugixml.hpp>
+#include <stdint.h>
 
 #ifndef HOBBES_DEFAULT_VERSION
 #define HOBBES_DEFAULT_VERSION  "10.0.4"