diff --git a/msgpack11.cpp b/msgpack11.cpp
index fa572fa..640ba9a 100644
--- a/msgpack11.cpp
+++ b/msgpack11.cpp
@@ -10,6 +10,7 @@
#include <algorithm>
#include <functional>
#include <stdexcept>
+#include <iterator>
namespace msgpack11 {