diff --git a/src/oatpp/json/ObjectMapper.cpp b/src/oatpp/json/ObjectMapper.cpp
index f31b6ec0..903232ef 100644
--- a/src/oatpp/json/ObjectMapper.cpp
+++ b/src/oatpp/json/ObjectMapper.cpp
@@ -103,6 +103,22 @@ oatpp::Void ObjectMapper::read(utils::parser::Caret& caret, const data::type::Ty
 
 }
 
+const data::mapping::ObjectToTreeMapper& ObjectMapper::objectToTreeMapper() const {
+  return m_objectToTreeMapper;
+}
+
+const data::mapping::TreeToObjectMapper& ObjectMapper::treeToObjectMapper() const {
+  return m_treeToObjectMapper;
+}
+
+data::mapping::ObjectToTreeMapper& ObjectMapper::objectToTreeMapper() {
+  return m_objectToTreeMapper;
+}
+
+data::mapping::TreeToObjectMapper& ObjectMapper::treeToObjectMapper() {
+  return m_treeToObjectMapper;
+}
+
 const ObjectMapper::SerializerConfig& ObjectMapper::serializerConfig() const {
   return m_serializerConfig;
 }
diff --git a/src/oatpp/json/ObjectMapper.hpp b/src/oatpp/json/ObjectMapper.hpp
index 1bd81a31..0d5250db 100644
--- a/src/oatpp/json/ObjectMapper.hpp
+++ b/src/oatpp/json/ObjectMapper.hpp
@@ -77,6 +77,12 @@ public:
 
   oatpp::Void read(oatpp::utils::parser::Caret& caret, const oatpp::Type* type, data::mapping::ErrorStack& errorStack) const override;
 
+  const data::mapping::ObjectToTreeMapper& objectToTreeMapper() const;
+  const data::mapping::TreeToObjectMapper& treeToObjectMapper() const;
+
+  data::mapping::ObjectToTreeMapper& objectToTreeMapper();
+  data::mapping::TreeToObjectMapper& treeToObjectMapper();
+
   const SerializerConfig& serializerConfig() const;
   const DeserializerConfig& deserializerConfig() const;