diff --git a/include/SimpleJson/DefaultTypes.hpp b/include/SimpleJson/DefaultTypes.hpp
index da3e898..4db3492 100644
--- a/include/SimpleJson/DefaultTypes.hpp
+++ b/include/SimpleJson/DefaultTypes.hpp
@@ -106,6 +106,10 @@ template<typename _KeyWriter, typename _ValWriter>
 using JsonWriterDictT =
 	JsonWriterDictImpl<_KeyWriter, _ValWriter, ToStringType, IMContainerType>;
 
+template<typename _KeyWriter, typename _ValWriter>
+using JsonWriterOrdDictT =
+	JsonWriterOrdDictImpl<_KeyWriter, _ValWriter, ToStringType>;
+
 template<typename _KeyWriter, typename _ValWriter>
 using JsonWriterStaticDictT =
 	JsonWriterStaticDictImpl<_KeyWriter, _ValWriter, ToStringType, IMContainerType>;
diff --git a/include/SimpleJson/DictWriter.hpp b/include/SimpleJson/DictWriter.hpp
index 56d4c16..bf8f12f 100644
--- a/include/SimpleJson/DictWriter.hpp
+++ b/include/SimpleJson/DictWriter.hpp
@@ -5,6 +5,10 @@
 
 #pragma once
 
+#include <algorithm>
+#include <functional>
+#include <vector>
+
 #include "Internal/SimpleObjects.hpp"
 
 #include "Utils.hpp"
@@ -88,6 +92,89 @@ struct JsonWriterDictBase
 
 }; // struct JsonWriterDictBase
 
+template<
+	typename _KeyWriter,
+	typename _ObjWriter,
+	typename _ToStringType,
+	typename _DictTraits>
+struct JsonWriterDynOrderedDictBase
+{
+
+	template<typename _OutputIt>
+	inline static void Write(_OutputIt destIt,
+		const typename _DictTraits::DictBase& obj,
+		const WriterConfig& config,
+		const WriterStates& state)
+	{
+		using _KeyType = typename _DictTraits::key_type;
+		std::vector<std::reference_wrapper<const _KeyType> > keys;
+
+		// Get all keys and sort them
+		keys.reserve(obj.size());
+		for(auto it = obj.cbegin(); it != obj.cend(); ++it)
+		{
+			keys.emplace_back(_DictTraits::GetKey(*it));
+		}
+		std::sort(keys.begin(), keys.end(), std::less<_KeyType>());
+
+		// Write the dict by the sorted keys
+		*destIt++ = '{';
+
+		WriterStates stateNextLevel = state;
+		++(stateNextLevel.m_nestLevel);
+		size_t len = obj.size();
+
+		if (config.m_indent.size() > 0 && obj.size() > 0)
+		{
+			Internal::RepeatOutput(destIt, config.m_lineEnd, 1);
+		}
+
+		for(auto it = keys.cbegin(); it != keys.cend(); ++it, --len)
+		{
+			const auto& key = it->get();
+
+			if (config.m_indent.size() > 0)
+			{
+				Internal::RepeatOutput(destIt,
+					config.m_indent, stateNextLevel.m_nestLevel);
+			}
+
+			_KeyWriter::Write(destIt, key, config, stateNextLevel);
+
+			if (config.m_indent.size() > 0)
+			{
+				*destIt++ = ' ';
+				*destIt++ = ':';
+				*destIt++ = ' ';
+			}
+			else
+			{
+				*destIt++ = ':';
+			}
+
+			const auto& val = obj[key];
+			_ObjWriter::Write(destIt, val, config, stateNextLevel);
+
+			if (len != 1)
+			{
+				*destIt++ = ',';
+			}
+
+			if (config.m_indent.size() > 0)
+			{
+				Internal::RepeatOutput(destIt, config.m_lineEnd, 1);
+			}
+		}
+
+		if (config.m_indent.size() > 0 && obj.size() > 0)
+		{
+			Internal::RepeatOutput(destIt, config.m_indent, state.m_nestLevel);
+		}
+		*destIt++ = '}';
+	}
+
+}; // struct JsonWriterDynOrderedDictBase
+
 template<typename _ToStringType>
 struct DynamicDictTraits
 {
@@ -156,6 +243,19 @@ struct JsonWriterDictImpl :
 {
 }; // struct JsonWriterDictImpl
 
+template<
+	typename _KeyWriter,
+	typename _ObjWriter,
+	typename _ToStringType>
+struct JsonWriterOrdDictImpl :
+	public JsonWriterDynOrderedDictBase<
+		_KeyWriter,
+		_ObjWriter,
+		_ToStringType,
+		DynamicDictTraits<_ToStringType> >
+{
+}; // struct JsonWriterOrdDictImpl
+
 template<
 	typename _KeyWriter,
 	typename _ObjWriter,
@@ -169,6 +269,6 @@ struct JsonWriterStaticDictImpl :
 		_ContainerType,
 		StaticDictTraits<_ToStringType> >
 {
-}; // struct JsonWriterDictImpl
+}; // struct JsonWriterStaticDictImpl
 
 } // namespace SimpleJson
diff --git a/include/SimpleJson/Internal/NumberParser.hpp b/include/SimpleJson/Internal/NumberParser.hpp
index e83f0bc..80ce685 100644
--- a/include/SimpleJson/Internal/NumberParser.hpp
+++ b/include/SimpleJson/Internal/NumberParser.hpp
@@ -249,7 +249,7 @@ namespace SIMPLEJSON_CUSTOMIZED_NAMESPACE
 			inline _LowType StdNumberDownCast(const _HighType& highVal)
 			{
 				if (std::numeric_limits<_LowType>::lowest() <= highVal &&
-					highVal <= std::numeric_limits<_LowType>::max())
+					highVal <= (std::numeric_limits<_LowType>::max)())
 				{
 					return static_cast<_LowType>(highVal);
 				}
diff --git a/include/SimpleJson/ObjectWriter.hpp b/include/SimpleJson/ObjectWriter.hpp
index dd531da..8e05533 100644
--- a/include/SimpleJson/ObjectWriter.hpp
+++ b/include/SimpleJson/ObjectWriter.hpp
@@ -87,6 +87,8 @@ struct JsonWriterObjectImpl
 	using KeyWriter  = _KeyWriter;
 	using DictWriter =
 		JsonWriterDictImpl<KeyWriter, Self, _ToStringType, _ContainerType>;
+	using OrdDictWriter =
+		JsonWriterOrdDictImpl<KeyWriter, Self, _ToStringType>;
 	using StaticDictWriter =
 		JsonWriterStaticDictImpl<KeyWriter, Self, _ToStringType, _ContainerType>;
 
@@ -113,7 +115,14 @@ struct JsonWriterObjectImpl
 			ListWriter::Write(destIt, obj.AsList(), config, state);
 			break;
 		case Internal::Obj::ObjCategory::Dict:
-			DictWriter::Write(destIt, obj.AsDict(), config, state);
+			if (config.m_orderDict)
+			{
+				OrdDictWriter::Write(destIt, obj.AsDict(), config, state);
+			}
+			else
+			{
+				DictWriter::Write(destIt, obj.AsDict(), config, state);
+			}
 			break;
 		case Internal::Obj::ObjCategory::StaticDict:
 			StaticDictWriter::Write(destIt, obj.AsStaticDict(), config, state);
diff --git a/include/SimpleJson/SimpleJson.hpp b/include/SimpleJson/SimpleJson.hpp
index b716363..fc16c1c 100644
--- a/include/SimpleJson/SimpleJson.hpp
+++ b/include/SimpleJson/SimpleJson.hpp
@@ -3,6 +3,10 @@
 // license that can be found in the LICENSE file or at
 // https://opensource.org/licenses/MIT.
 
+
+#pragma once
+
+
 #include "DefaultTypes.hpp"
 
 #ifndef SIMPLEJSON_CUSTOMIZED_NAMESPACE
@@ -27,11 +31,21 @@ struct FindObjWriter<Internal::Obj::Object>
 	using type = JsonWriterObject;
 }; // struct FindObjWriter
 
+template<>
+struct FindObjWriter<Internal::Obj::BaseObj> :
+	public FindObjWriter<Internal::Obj::Object>
+{}; // struct FindObjWriter
+
 template<>
 struct FindObjWriter<Internal::Obj::HashableObject> :
 	public FindObjWriter<Internal::Obj::Object>
 {}; // struct FindObjWriter
 
+template<>
+struct FindObjWriter<Internal::Obj::HashableBaseObj> :
+	public FindObjWriter<Internal::Obj::Object>
+{}; // struct FindObjWriter
+
 template<>
 struct FindObjWriter<Internal::Obj::Null>
 {
diff --git a/include/SimpleJson/WriterConfig.hpp b/include/SimpleJson/WriterConfig.hpp
index 4ea6474..d9eec4c 100644
--- a/include/SimpleJson/WriterConfig.hpp
+++ b/include/SimpleJson/WriterConfig.hpp
@@ -19,13 +19,15 @@ struct WriterConfig
 {
 	WriterConfig() :
 		m_indent(""),
-		m_lineEnd("\n")
+		m_lineEnd("\n"),
+		m_orderDict(false)
 	{}
 
 	~WriterConfig() = default;
 
 	std::string m_indent;
 	std::string m_lineEnd;
+	bool m_orderDict;
 
 }; // struct WriterConfig
 
diff --git a/test/src/TestBoolParser.cpp b/test/src/TestBoolParser.cpp
index 28a7b08..88c1ac3 100644
--- a/test/src/TestBoolParser.cpp
+++ b/test/src/TestBoolParser.cpp
@@ -5,6 +5,9 @@
 
 #include <gtest/gtest.h>
 
+#ifdef _MSC_VER
+#include <windows.h>
+#endif // _MSC_VER
 #include <SimpleJson/SimpleJson.hpp>
 
 #ifndef SIMPLEJSON_CUSTOMIZED_NAMESPACE
diff --git a/test/src/TestDictParser.cpp b/test/src/TestDictParser.cpp
index 527c355..e3e9736 100644
--- a/test/src/TestDictParser.cpp
+++ b/test/src/TestDictParser.cpp
@@ -5,6 +5,9 @@
 
 #include <gtest/gtest.h>
 
+#ifdef _MSC_VER
+#include <windows.h>
+#endif // _MSC_VER
 #include <SimpleJson/SimpleJson.hpp>
 
 #ifndef SIMPLEJSON_CUSTOMIZED_NAMESPACE
diff --git a/test/src/TestGenericParser.cpp b/test/src/TestGenericParser.cpp
index 7152df4..655f4e7 100644
--- a/test/src/TestGenericParser.cpp
+++ b/test/src/TestGenericParser.cpp
@@ -5,6 +5,9 @@
 
 #include <gtest/gtest.h>
 
+#ifdef _MSC_VER
+#include <windows.h>
+#endif // _MSC_VER
 #include <SimpleJson/SimpleJson.hpp>
 
 #ifndef SIMPLEJSON_CUSTOMIZED_NAMESPACE
diff --git a/test/src/TestInputStateMachine.cpp b/test/src/TestInputStateMachine.cpp
index 1b43938..8ba5e03 100644
--- a/test/src/TestInputStateMachine.cpp
+++ b/test/src/TestInputStateMachine.cpp
@@ -5,6 +5,9 @@
 
 #include <gtest/gtest.h>
 
+#ifdef _MSC_VER
+#include <windows.h>
+#endif // _MSC_VER
 #include <SimpleJson/InputStateMachine.hpp>
 #include <SimpleJson/Internal/SimpleObjects.hpp>
 
diff --git a/test/src/TestJsonWriter.cpp b/test/src/TestJsonWriter.cpp
index 12bd03d..53cc030 100644
--- a/test/src/TestJsonWriter.cpp
+++ b/test/src/TestJsonWriter.cpp
@@ -5,6 +5,9 @@
 
 #include <gtest/gtest.h>
 
+#ifdef _MSC_VER
+#include <windows.h>
+#endif // _MSC_VER
 #include <SimpleJson/SimpleJson.hpp>
 
 #ifndef SIMPLEJSON_CUSTOMIZED_NAMESPACE
@@ -362,3 +365,69 @@ GTEST_TEST(TestJsonWriter, ObjectWriter)
 		EXPECT_EQ(res, "{\"string\":\"string\"}");
 	}
 }
+
+GTEST_TEST(TestJsonWriter, OrderedDictWriter)
+{
+	using _Str = Internal::Obj::String;
+	using _Dict = Internal::Obj::Dict;
+
+	WriterConfig config;
+	config.m_orderDict = true;
+
+	{
+		std::string expOut =
+			"{\"0\":0,\"1\":1,\"2\":2,\"a\":\"a\",\"b\":\"b\",\"c\":\"c\"}";
+		_Dict dict;
+		dict[_Str("a")] = _Str("a");
+		dict[_Str("b")] = _Str("b");
+		dict[_Str("c")] = _Str("c");
+		dict[_Str("0")] = Internal::Obj::Int64(0);
+		dict[_Str("1")] = Internal::Obj::Int64(1);
+		dict[_Str("2")] = Internal::Obj::Int64(2);
+
+		const Internal::Obj::BaseObj& obj = dict;
+		std::string res = DumpStr(obj, config);
+		EXPECT_EQ(res, expOut);
+
+		res.clear();
+		JsonWriterOrdDictT<JsonWriterKey, JsonWriterObject>::Write(
+			std::back_inserter(res),
+			dict,
+			config, WriterStates()
+		);
+		EXPECT_EQ(res, expOut);
+	}
+
+	config.m_indent = "\t";
+
+	{
+		std::string expOut =
+"{\n\
+	\"0\" : 0,\n\
+	\"1\" : 1,\n\
+	\"2\" : 2,\n\
+	\"a\" : \"a\",\n\
+	\"b\" : \"b\",\n\
+	\"c\" : \"c\"\n\
+}";
+		_Dict dict;
+		dict[_Str("a")] = _Str("a");
+		dict[_Str("b")] = _Str("b");
+		dict[_Str("c")] = _Str("c");
+		dict[_Str("0")] = Internal::Obj::Int64(0);
+		dict[_Str("1")] = Internal::Obj::Int64(1);
+		dict[_Str("2")] = Internal::Obj::Int64(2);
+
+		const Internal::Obj::BaseObj& obj = dict;
+		std::string res = DumpStr(obj, config);
+		EXPECT_EQ(res, expOut);
+
+		res.clear();
+		JsonWriterOrdDictT<JsonWriterKey, JsonWriterObject>::Write(
+			std::back_inserter(res),
+			dict,
+			config, WriterStates()
+		);
+		EXPECT_EQ(res, expOut);
+	}
+}
diff --git a/test/src/TestListParser.cpp b/test/src/TestListParser.cpp
index cc771c8..4bb9f36 100644
--- a/test/src/TestListParser.cpp
+++ b/test/src/TestListParser.cpp
@@ -5,6 +5,9 @@
 
 #include <gtest/gtest.h>
 
+#ifdef _MSC_VER
+#include <windows.h>
+#endif // _MSC_VER
 #include <SimpleJson/SimpleJson.hpp>
 
 #ifndef SIMPLEJSON_CUSTOMIZED_NAMESPACE
diff --git a/test/src/TestNullParser.cpp b/test/src/TestNullParser.cpp
index ce72f28..3b8bbab 100644
--- a/test/src/TestNullParser.cpp
+++ b/test/src/TestNullParser.cpp
@@ -5,6 +5,9 @@
 
 #include <gtest/gtest.h>
 
+#ifdef _MSC_VER
+#include <windows.h>
+#endif // _MSC_VER
 #include <SimpleJson/SimpleJson.hpp>
 
 #ifndef SIMPLEJSON_CUSTOMIZED_NAMESPACE
diff --git a/test/src/TestNumericParser.cpp b/test/src/TestNumericParser.cpp
index ee1702b..61e28b6 100644
--- a/test/src/TestNumericParser.cpp
+++ b/test/src/TestNumericParser.cpp
@@ -5,6 +5,9 @@
 
 #include <gtest/gtest.h>
 
+#ifdef _MSC_VER
+#include <windows.h>
+#endif // _MSC_VER
 #include <SimpleJson/SimpleJson.hpp>
 
 #ifndef SIMPLEJSON_CUSTOMIZED_NAMESPACE
diff --git a/test/src/TestSpecialParser.cpp b/test/src/TestSpecialParser.cpp
index 9aff5e8..148f4b6 100644
--- a/test/src/TestSpecialParser.cpp
+++ b/test/src/TestSpecialParser.cpp
@@ -5,6 +5,9 @@
 
 #include <gtest/gtest.h>
 
+#ifdef _MSC_VER
+#include <windows.h>
+#endif // _MSC_VER
 #include <SimpleJson/SimpleJson.hpp>
 
 #ifndef SIMPLEJSON_CUSTOMIZED_NAMESPACE
diff --git a/test/src/TestStaticDict.cpp b/test/src/TestStaticDict.cpp
index 18250d0..5468c06 100644
--- a/test/src/TestStaticDict.cpp
+++ b/test/src/TestStaticDict.cpp
@@ -5,6 +5,9 @@
 
 #include <gtest/gtest.h>
 
+#ifdef _MSC_VER
+#include <windows.h>
+#endif // _MSC_VER
 #include <SimpleJson/SimpleJson.hpp>
 
 #ifndef SIMPLEJSON_CUSTOMIZED_NAMESPACE
diff --git a/test/src/TestStringParser.cpp b/test/src/TestStringParser.cpp
index 5ce9e21..580ecd1 100644
--- a/test/src/TestStringParser.cpp
+++ b/test/src/TestStringParser.cpp
@@ -5,6 +5,9 @@
 
 #include <gtest/gtest.h>
 
+#ifdef _MSC_VER
+#include <windows.h>
+#endif // _MSC_VER
 #include <SimpleJson/SimpleJson.hpp>
 
 #ifndef SIMPLEJSON_CUSTOMIZED_NAMESPACE