diff --git a/include/mapnik/wkb.hpp b/include/mapnik/wkb.hpp
index 939fc17b7..52b902ae9 100644
--- a/include/mapnik/wkb.hpp
+++ b/include/mapnik/wkb.hpp
@@ -28,6 +28,9 @@
 #include <mapnik/geometry.hpp>
 #include <mapnik/util/noncopyable.hpp>
 
+// stl
+#include <cstdint>
+
 namespace mapnik {
 
 /*!