diff --git a/include/rapidjson/document.h b/include/rapidjson/document.h
index 84e3ca3..a41288e 100644
--- a/include/rapidjson/document.h
+++ b/include/rapidjson/document.h
@@ -3,6 +3,7 @@
 
 #include "reader.h"
 #include "internal/strfunc.h"
+#include <new>		// placement new
 
 #ifdef _MSC_VER
 #pragma warning(push)