diff --git a/include/exiv2/types.hpp b/include/exiv2/types.hpp
index 12a6d871..85949e70 100644
--- a/include/exiv2/types.hpp
+++ b/include/exiv2/types.hpp
@@ -11,6 +11,7 @@
 
 // standard includes
 #include <algorithm>
+#include <cstdint>
 #include <limits>
 #include <sstream>
 #include <vector>